CISA KEV · catalog date Jun 22, 2023 · first observed Jul 19, 2026
Evidence dossier
CVE-2016-9079
A use-after-free vulnerability in SVG Animation has been discovered.
Exploited in the wild (CISA KEV since Jun 22, 2023). NVD reports CVSS 3.1 7.5. EPSS estimates 87.4% exploit likelihood as of Aug 26, 2026.
As of Aug 27, 2026
Normalized restatement
A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.
- State
- PUBLISHED
- Published
- Jun 11, 2018
- Updated
- Oct 21, 2025
- Evidence coverage
- 98%
Evidence chronology
What was known when
- Source dateSource date omittedFirst observed by CASCACISA-ADPOriginal evidence ↗
Record text: CISA ADP Vulnrichment
Inspect raw assertion
- Field
container- Value
- CISA ADP Vulnrichment
- Source dateSource date omittedFirst observed by CASCACVE ProgramOriginal evidence ↗
Record text: CVE Program Container
Inspect raw assertion
- Field
container- Value
- CVE Program Container
- Source dateSource date omittedFirst observed by CASCAmozillaOriginal evidence ↗
Record text: A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.
Inspect raw assertion
- Field
container- Value
- A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.
- Source dateFirst observed by CASCACISA KEVOriginal evidence ↗
Exploitation cataloged: Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
Inspect raw assertion
- Field
observed_exploitation- Value
- Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
- Source dateFirst observed by CASCAFIRST EPSSOriginal evidence ↗
EPSS score: 87.42% probability · 99.74th percentile
Inspect raw assertion
- Field
model_probability- Value
- Probability 0.874230000000; percentile 0.997420000000
FIRST EPSS · score date Aug 26, 2026 · 99.7th percentile · first observed Aug 26, 2026
NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot
Evidence detail
Source limits and decisions
Why each evidence state has this value
casca-unknown-reasons-v1Eligible evidence is present for this bounded claim.
- Revision
- evidence-policy-v1.1.0
- Cutoff
- Aug 27, 2026
- Resolution
- None
Eligible evidence is present for this bounded claim.
- Revision
- evidence-policy-v1.1.0
- Cutoff
- Aug 27, 2026
- Resolution
- None
Eligible evidence is present for this bounded claim.
- Revision
- casca-direct-cvss-eligibility-v1
- Cutoff
- Aug 27, 2026
- Resolution
- None
The cited source assertion is retained while canonical product linkage remains open.
- Revision
- casca-factor-d-obligations-v1
- Cutoff
- Aug 27, 2026
- Resolution
- Resolve identity
Source comparison
Who said what
CISA ADP Vulnrichment
Inspect raw assertion
- Field
container- Value
- CISA ADP Vulnrichment
CVE Program Container
Inspect raw assertion
- Field
container- Value
- CVE Program Container
A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.
Inspect raw assertion
- Field
container- Value
- A use-after-free vulnerability in SVG Animation has been discovered. An exploit built on this vulnerability has been discovered in the wild targeting Firefox and Tor Browser users on Windows. This vulnerability affects Firefox < 50.0.2, Firefox ESR < 45.5.1, and Thunderbird < 45.5.1.
Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
Inspect raw assertion
- Field
observed_exploitation- Value
- Mozilla Firefox, Firefox ESR, and Thunderbird Use-After-Free Vulnerability
87.42% probability · 99.74th percentile
Inspect raw assertion
- Field
model_probability- Value
- Probability 0.874230000000; percentile 0.997420000000
Applicability
Cited product scope
Grouped from 10 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.
Identity source boundaries
- Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z
27d65b0f-b718-4b4f-bb79-c47c68d09dfa - Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z
955dae73-7302-438b-aee1-058d7cc5d48e
14 scope groups
Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "50.0.2", "versionType": "custom"}]Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "45.5.1", "versionType": "custom"}]Canonical linkage remains open; the cited source assertion is retained below.
Inspect raw assertion
[{"status": "affected", "version": "unspecified", "lessThan": "45.5.1", "versionType": "custom"}]product-3ccb4bc87dfae98fa2f2a06435fe5b3d9be78572fb958a89f2d7a96b4066447eLinked exactInspect raw assertion
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 0 · node/0 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
deece5fc-cacf-4496-a3e7-164736409252
product-6a798dc931affc038ba266631a506d54b455ffebd96b4fae68f77b6bd7aef178Linked exactInspect raw assertions
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Environmental constraint
- Configuration
- 3 · node/1 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a2572d17-1de6-457b-99cc-64afd54487ea
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Environmental constraint
- Configuration
- 2 · node/1 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a2572d17-1de6-457b-99cc-64afd54487ea
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Environmental constraint
- Configuration
- 5 · node/1 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a2572d17-1de6-457b-99cc-64afd54487ea
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Environmental constraint
- Configuration
- 4 · node/1 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a2572d17-1de6-457b-99cc-64afd54487ea
product-07fd419647bc4be85f7cd99fb6db991c405f59f4526c86f98007cccadd88fb6bLinked exactInspect raw assertions
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 4 · node/0 · match 0
- Logic
- OR
- Version bounds
- through excluding 45.5.1
- Match ID
3588ff4a-af7b-4d59-984e-231679ab6e4b
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 3 · node/0 · match 0
- Logic
- OR
- Version bounds
- through excluding 50.0.2
- Match ID
4a0724a6-a874-493e-8082-2d348bf13665
product-148c720470a65e23ffba2cd2146b70004a125bb02def92b1d58b670632c22fffLinked exactInspect raw assertion
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 2 · node/0 · match 0
- Logic
- OR
- Version bounds
- through excluding 45.5.1
- Match ID
3c981e74-6acc-4fa0-a831-041533742304
product-ec20120153af988d42a6a2dfd3cdd9595762b35581f66014faaa4f85d8f844eeLinked exactInspect raw assertions
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 2
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
142ad0dd-4cf3-4d74-9442-459ce3347e3a
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 1
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
2f6ab192-9d7d-4a9a-8995-e53a9de9eafc
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
1d8b549b-e57b-4dfe-8a13-cab06b5356b3
product-ebce605e64c58caa7df6a30e91702332cd8c0be8f801e44353e6350e913ec5aeLinked exactInspect raw assertions
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 4
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
ee249e1b-a1fd-4e08-aa71-a0e1f10ffe97
cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 3
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
133aafa7-af42-4d7b-8822-aa2e85611bf5
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 5
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
33c068a4-3780-4eab-a937-6082df847564
product-8db20157ede2f731f576213a7e555a24d2424bb17aed8e43ad9b77c3587f9deaLinked exactInspect raw assertions
cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 6
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
54d669d4-6d7e-449d-80c1-28fa44f06ffe
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 7
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
9bbcd86a-e6c7-4444-9d74-f861084090f0
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 8
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
51ef4996-72f4-4fa4-814f-f5991e7a8318
product-7120df83a9b73aae2817084ac2070ecc7d1fbfcada23076a424824e660688aaeLinked exactInspect raw assertions
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 10
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
d99a687e-eae6-417e-a88e-d0082bc194cd
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 9
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
98381e61-f082-4302-b51f-5648884f998b
product-1220950f14941e44f97ef359dfe4710143870ab715db6bc680fb3bcf3da40d5bLinked exactInspect raw assertions
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 13
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a4e9dd8a-a68b-4a69-8b01-bff92a2020a8
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 11
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
a8442c20-41f9-47fd-9a12-e724d3a31fd7
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 12
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
9ec0d196-f7b8-4bdd-9050-779f7a7fbee4
product-b2aa744c9fb2b4ef0e3b842acbf37879ad4ac43af291292cfb0906170b204ab9Linked exactInspect raw assertions
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 16
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
825ece2d-e232-46e0-a047-074b34db1e97
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 15
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
e5ed5807-55b7-47c5-97a6-03233f4fbc3a
cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 1 · node/0 · match 14
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
d0ac5cd5-6e58-433c-9eb3-6dfe5656463e
product-cb887e6e5c78ce9cc1a013c43cbc976a8475956af32b20286ad205509b7dbf65Linked exactInspect raw assertion
cpe:2.3:a:torproject:tor:-:*:*:*:*:*:*:*- Official link
- Linked exact
- Role
- Vulnerable target
- Configuration
- 5 · node/0 · match 0
- Logic
- OR
- Version bounds
- No explicit bounds
- Match ID
14724d6f-ac53-48dd-a676-012300727cdc
Affected-product evidence
Accepted scope and product mapping
10 canonical links · 1 source-reported links
vendor-a8002e9a4c58b83fa97f47fe42903a60facd8770768e9b325e288d873b8b8255 · product-07fd419647bc4be85f7cd99fb6db991c405f59f4526c86f98007cccadd88fb6b
- Source class
- Nvd cpe vulnerable target
- Assertions
- 2
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
9a548d41-8e04-4f24-b421-615b9e95b3f7bf33af3c-0d29-4280-8a6f-bbbe283b8715vendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-1220950f14941e44f97ef359dfe4710143870ab715db6bc680fb3bcf3da40d5b
- Source class
- Nvd cpe vulnerable target
- Assertions
- 3
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
043a95c4-0a9f-45b6-93c9-f62d1a8133bd7b08d27e-7933-4da6-8271-a12207fe2223dcff9296-55d8-4c72-a95c-61851eeaf03dvendor-a8002e9a4c58b83fa97f47fe42903a60facd8770768e9b325e288d873b8b8255 · product-148c720470a65e23ffba2cd2146b70004a125bb02def92b1d58b670632c22fff
- Source class
- Nvd cpe vulnerable target
- Assertions
- 1
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
1708100e-f873-44e0-98e8-ab1f2b9912f3vendor-66ae8c5e06427f7450637d18322b0dc411c0b469d940341cf076a620d444fe3c · product-3ccb4bc87dfae98fa2f2a06435fe5b3d9be78572fb958a89f2d7a96b4066447e
- Source class
- Nvd cpe vulnerable target
- Assertions
- 1
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
3ae07912-d05a-4c69-8fe0-28b5bdf331bdvendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-7120df83a9b73aae2817084ac2070ecc7d1fbfcada23076a424824e660688aae
- Source class
- Nvd cpe vulnerable target
- Assertions
- 2
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
9af969f4-ec07-49e9-85ed-b3a3cf86bafafdc3ed80-5717-4d9a-ba97-c92dbc98ba89vendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-8db20157ede2f731f576213a7e555a24d2424bb17aed8e43ad9b77c3587f9dea
- Source class
- Nvd cpe vulnerable target
- Assertions
- 3
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
0c295737-6e64-46da-a3c3-27500046f269730f5846-d589-465a-afc9-546eaf8e30358266aa10-bb1e-439e-bc5a-3f74a0000dc9vendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-b2aa744c9fb2b4ef0e3b842acbf37879ad4ac43af291292cfb0906170b204ab9
- Source class
- Nvd cpe vulnerable target
- Assertions
- 3
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
40c6c4bf-c007-4919-b4b0-e40241dfbeb5469d4f2c-f0da-40f3-a8fc-314af7a5f0e6cd2b7454-36ca-41db-9faf-5e21df42deb1vendor-cd932a8172762174b80725518da2ae4c0fa677f4bd008b71443d945608f53f89 · product-cb887e6e5c78ce9cc1a013c43cbc976a8475956af32b20286ad205509b7dbf65
- Source class
- Nvd cpe vulnerable target
- Assertions
- 1
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
0130cc23-c932-4a24-8e6c-82052c02ac3avendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-ebce605e64c58caa7df6a30e91702332cd8c0be8f801e44353e6350e913ec5ae
- Source class
- Nvd cpe vulnerable target
- Assertions
- 3
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
101aee5f-a65c-4a43-b2ed-68e748dd8d821cec0618-5169-451c-8ca0-4b354fc84f513503f26f-af55-4d40-ae1a-e22dcd037897vendor-c759fafc60d6abc1277ecbf1ee6294d1f25ae0a4c7d5d0d9355c414b2db182cc · product-ec20120153af988d42a6a2dfd3cdd9595762b35581f66014faaa4f85d8f844ee
- Source class
- Nvd cpe vulnerable target
- Assertions
- 3
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
4e6b1053-e46d-43d8-950b-277b60c06754d8fe742a-8bc5-482f-8485-de7f32d4dc14f18579dc-a135-4efa-977d-40e6811a8554Canonical linkage remains open; the cited source assertion is retained below.
Vendor specified only by source · Product specified only by source
- Source class
- Direct cve affected
- Assertions
- 3
- Mapping revision
- cpe23-exact-mapping-v1
- Observed cutoff
- Aug 27, 2026
Retained assertion IDs
0d06ca94-e558-4e23-aa5f-697ef3e37f4a7a109bed-ee6c-4984-8acc-7bf22b63f5e0fc360cfa-d62c-4cdd-ab38-cfefbe4c5a77Assessments
CVSS by origin
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NAV:N/AC:L/Au:N/C:P/I:N/A:NCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NDirect CVE/CNA normalized decisions
CISA-ADP
CVSS 3.1 · Secondary · Independent enrichment · rank 2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Validation
- Valid match
- Recomputed
- 7.5
- Decision reason
- Evidence supported
- Policy
- casca-direct-cvss-eligibility-v1
Assessments are retained side by side under closed precedence. Cascade never averages CVSS.
Evidence boundaries
- KEV membership is authoritative for the catalog, not proof of exposure in any environment.
- EPSS is a dated model probability and not an individual-environment prediction.
- Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
- NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
- Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
- NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
- Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
- OSV aggregation and OSV-converted NVD material are not independent corroboration.
- Red Hat facts are vendor assertions for the exact supplied products.
- Nonmembership and not-yet-observed states are not proof of safety.