CASCACascade Atlas

Evidence dossier

CVE-2019-15271

Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability

Exploited in the wild (CISA KEV since Jun 8, 2022). NVD reports CVSS 3.1 8.8. EPSS estimates 6.0% exploit likelihood as of Aug 27, 2026.

71.5–72.6Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker to execute arbitrary commands with root privileges. The attacker must have either a valid credential or an active session token. The vulnerability is due to lack of input validation of the HTTP payload. An attacker could exploit this vulnerability by sending a malicious HTTP request to the web-based management interface of the targeted device. A successful exploit could allow the attacker to execute commands with root privileges.

State
PUBLISHED
Published
Nov 26, 2019
Updated
Oct 21, 2025
Evidence coverage
97%

Evidence chronology

What was known when

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  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    cisco

    Record text: Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 5.98% probability · 92.76th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.059790000000; percentile 0.927610000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Jun 8, 2022 · first observed Jul 19, 2026

Exploit likelihood5.98%

FIRST EPSS · score date Aug 27, 2026 · 92.8th percentile · first observed Aug 27, 2026

SeverityCVSS 8.8

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-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

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-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
ciscoOriginal assertion
Record text

Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability

Inspect raw assertion
Field
container
Value
Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Cisco RV Series Routers Deserialization of Untrusted Data Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

5.98% probability · 92.76th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.059790000000; percentile 0.927610000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
8Underlying assertions
8Canonical products
4Target assertions
4Constraint assertions

Grouped from 8 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 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

9 scope groups

cisco · source assertedCiscoCisco Small Business RV Series Router FirmwareDirect source scope
Affected: unspecified to before n/a (custom comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "unspecified", "lessThan": "n/a", "versionType": "custom"}]
NVD CPE · HARDWAREciscorv016_multi-wan_vpnEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-6fe82c2d6ccf60e6cae4b9ddaa57e72558e3c62b45e4ae5f68ca24ef9f78925eLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:rv016_multi-wan_vpn:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d8580066-17be-488c-b5c1-d0e9f2bd7c9e
NVD CPE · OPERATING SYSTEMciscorv016_multi-wan_vpn_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (< 4.2.3.10)Canonical identity product-f0b9334fdd98d6298b1174fccb8ce50d295602f9705bafde4021d3f24939bf58Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:cisco:rv016_multi-wan_vpn_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 4.2.3.10
    Match ID
    e534b9b6-dbcc-4473-bd38-df90cc61d39e
NVD CPE · HARDWAREciscorv042_dual_wan_vpnEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-6f0907d368b4fab41cdfe209ed23ef42ffdd010fc7d24a356d9cab832e922d61Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:rv042_dual_wan_vpn:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f7ff97bc-5d3d-48ea-a145-62fff9fdffe6
NVD CPE · OPERATING SYSTEMciscorv042_dual_wan_vpn_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (< 4.2.3.10)Canonical identity product-90915a883981c8f662e4c6e35f4a43e7484499c1b9f1c31454090a38ead461a0Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:cisco:rv042_dual_wan_vpn_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 4.2.3.10
    Match ID
    3f8db966-b8ef-4b21-a683-3ce8660be760
NVD CPE · HARDWAREciscorv042g_dual_gigabit_wan_vpnEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-c177b91179c0c00c6e491b1d6da913d9000403bfcb393735dc2631321ae06734Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:rv042g_dual_gigabit_wan_vpn:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    ed6af010-bd96-49e0-bf5d-c52afec7a054
NVD CPE · OPERATING SYSTEMciscorv042g_dual_gigabit_wan_vpn_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (< 4.2.3.10)Canonical identity product-1a109a75722bd1e3f8613d33b82e8788d8752eb6e02448190af589772d283247Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:cisco:rv042g_dual_gigabit_wan_vpn_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 4.2.3.10
    Match ID
    406ecf95-218c-40f1-9f78-5e3e308af8c5
NVD CPE · HARDWAREciscorv082_dual_wan_vpnEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-45d63a1d5df0a0d6d538b6645ca72b9021a72ede48654c4d894b4393f32ecc4eLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:cisco:rv082_dual_wan_vpn:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    104be248-f76d-489c-b2d6-1a60848aceaf
NVD CPE · OPERATING SYSTEMciscorv082_dual_wan_vpn_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (< 4.2.3.10)Canonical identity product-c0248799cd907922f6f0f58c1b231b9819a07e4b84bf8b55e6e37754f252eb76Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:cisco:rv082_dual_wan_vpn_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 4.2.3.10
    Match ID
    5e7b9f4f-b78f-49ac-9116-fb8d5d7a15c5

Affected-product evidence

Accepted scope and product mapping

4 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-1a109a75722bd1e3f8613d33b82e8788d8752eb6e02448190af589772d283247

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
b398e60b-66f6-4d38-b16c-5ac5945af784
Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-90915a883981c8f662e4c6e35f4a43e7484499c1b9f1c31454090a38ead461a0

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
2bf128f6-ba88-435f-aea8-2e633ef17380
Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-c0248799cd907922f6f0f58c1b231b9819a07e4b84bf8b55e6e37754f252eb76

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
b3f24b40-3742-4a72-82e3-27ff5d0583c0
Mapping establishedEvidence supported

vendor-0774b265c0e837e737aaf99ed0f2450c048e61f34267ca59d8623878b839334e · product-f0b9334fdd98d6298b1174fccb8ce50d295602f9705bafde4021d3f24939bf58

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
4a315553-7815-47ff-89da-d40cb5883e97
Source-reported scopeSource-reported scope

Canonical 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
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
bea3401b-4364-4dc0-b256-f487d6bb8dc5

Assessments

CVSS by origin

8.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8
psirt@cisco.comCVSS 3.0 · role Secondary · priority eligiblevalid_matchCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
ciscoCVSS 3.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.8Priority eligible

cisco

CVSS 3.0 · Primary · Original assertion · rank 1

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.8
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.