CASCACascade Atlas

Evidence dossier

CVE-2024-12987

DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection

Exploited in the wild (CISA KEV since May 15, 2025). VulDB reports CVSS 4.0 6.9. Severity assessments differ within at least one CVSS version. EPSS estimates 98.1% exploit likelihood as of Aug 18, 2026.

80.6–82.8Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A vulnerability, which was classified as critical, was found in DrayTek Vigor2960 and Vigor300B 1.5.1.4. Affected is an unknown function of the file /cgi-bin/mainfunction.cgi/apmcfgupload of the component Web Management Interface. The manipulation of the argument session leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.5.1.5 is able to address this issue. It is recommended to upgrade the affected component.

State
PUBLISHED
Published
Dec 27, 2024
Updated
Oct 21, 2025
Evidence coverage
80%

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
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    VulDB

    Record text: DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection

    Inspect raw assertion
    Field
    container
    Value
    DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: DrayTek Vigor Routers OS Command Injection Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    DrayTek Vigor Routers OS Command Injection Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 98.08% probability · 99.91th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.980840000000; percentile 0.999080000000
    Original evidence ↗

Assessments differ

NVD9.8CVSS 3.1 · source date omitted
cna@vuldb.com6.9CVSS 4.0 · source date omitted
cna@vuldb.com7.3CVSS 3.1 · source date omitted
cna@vuldb.com7.5CVSS 2.0 · source date omitted

Values are shown separately by source and CVSS version.

ExploitationCatalog member

CISA KEV · catalog date May 15, 2025 · first observed Jul 19, 2026

Exploit likelihood98.08%

FIRST EPSS · score date Aug 18, 2026 · 99.9th percentile · first observed Aug 18, 2026

SeverityAssessments differ

VulDB · CVSS 4.0 · first observed Jul 19, 2026 · values shown separately below

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 assessmentAssessments differ

Eligible assertions materially conflict and remain visible side by side.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
Resolve conflict
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 ↗
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 ↗
VulDBOriginal assertion
Record text

DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection

Inspect raw assertion
Field
container
Value
DrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injection
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

DrayTek Vigor Routers OS Command Injection Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
DrayTek Vigor Routers OS Command Injection Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

98.08% probability · 99.91th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.980840000000; percentile 0.999080000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
4Underlying assertions
4Canonical products
2Target assertions
2Constraint assertions

Grouped from 4 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

6 scope groups

VulDB · source assertedDrayTekVigor2960Direct source scope
Affected: 1.5.1.4
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "1.5.1.4"}]
VulDB · source assertedDrayTekVigor300BDirect source scope
Affected: 1.5.1.4
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "1.5.1.4"}]
NVD CPE · HARDWAREdraytekvigor2960Environmental constraint · 1 assertions
Version not applicableCanonical identity product-2b3f74f15f3fa5c878443a85c4125d958db8fc2ea545075c38f9a4a97d0bab2bLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:draytek:vigor2960:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8fda3905-67dd-4f31-afcf-014f1d7ccc1f
NVD CPE · OPERATING SYSTEMdraytekvigor2960_firmwareVulnerable target · 1 assertions
Version 1.5.1.4Canonical identity product-367d4a9bb8d3bb315845477d344315754d256d897976bd76ebba0cbb0dcbbe7fLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:draytek:vigor2960_firmware:1.5.1.4:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    564753ce-a701-4d76-94d8-c452af0c5e82
NVD CPE · HARDWAREdraytekvigor300bEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-160e8fac3a3fd6f40b46d7fb5d98f4769f2b950d7aa017880ee5dcc11e40f82bLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:draytek:vigor300b:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    da5b988d-ed1a-4cbf-8b34-c5b03a55ed52
NVD CPE · OPERATING SYSTEMdraytekvigor300b_firmwareVulnerable target · 1 assertions
Version 1.5.1.4Canonical identity product-d2978ffea6d708eae77e001de08ae6f5140a5c8d716026de8bf11be0e12d6acdLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:draytek:vigor300b_firmware:1.5.1.4:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d0357964-f484-4db3-bcad-1e02639357c4

Affected-product evidence

Accepted scope and product mapping

2 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-dbfbc71640fa78f1180e3ccb0617e87b2b2c10d4741c33e36622777a634c2adc · product-367d4a9bb8d3bb315845477d344315754d256d897976bd76ebba0cbb0dcbbe7f

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1bbe9d55-7e89-441e-a7dc-5172d1bdc1af
Mapping establishedEvidence supported

vendor-dbfbc71640fa78f1180e3ccb0617e87b2b2c10d4741c33e36622777a634c2adc · product-d2978ffea6d708eae77e001de08ae6f5140a5c8d716026de8bf11be0e12d6acd

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
00bee646-8d09-4e80-9f7b-527118638bca
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
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
8936746d-6029-4e56-a2af-3922f9f2f9c5ee58652d-7712-430e-a887-8dd82ff4c511

Assessments

CVSS by origin

9.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.9
cna@vuldb.comCVSS 4.0 · role Secondary · priority eligiblevalid_matchCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
7.3
cna@vuldb.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5
cna@vuldb.comCVSS 2.0 · role Secondary · priority eligiblevalid_matchAV:N/AC:L/Au:N/C:P/I:P/A:P
6.9
VulDBCVSS 4.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.3
VulDBCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.3
VulDBCVSS 3.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5
VulDBCVSS 2.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityAV:N/AC:L/Au:N/C:P/I:P/A:P

Direct CVE/CNA normalized decisions

6.9Priority eligible

VulDB

CVSS 4.0 · Primary · Original assertion · rank 1

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Validation
Valid match
Recomputed
6.9
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1
7.3Priority eligible

VulDB

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Validation
Valid match
Recomputed
7.3
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1
7.3Priority eligible

VulDB

CVSS 3.0 · Primary · Original assertion · rank 1

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Validation
Valid match
Recomputed
7.3
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1
7.5Priority eligible

VulDB

CVSS 2.0 · Primary · Original assertion · rank 1

AV:N/AC:L/Au:N/C:P/I:P/A:P
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.