CASCACascade Atlas

Evidence dossier

CVE-2025-64328

FreePBX Administration GUI is Vulnerable to Authenticated Command Injection

Exploited in the wild (CISA KEV since Feb 3, 2026). GitHub_M reports CVSS 4.0 8.6. EPSS estimates 84.6% exploit likelihood as of Aug 27, 2026.

82.5–84.1Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

FreePBX Endpoint Manager is a module for managing telephony endpoints in FreePBX systems. In versions 17.0.2.36 and above before 17.0.3, the filestore module within the Administrative interface is vulnerable to a post-authentication command injection by an authenticated known user via the testconnection -> check_ssh_connect() function. An attacker can leverage this vulnerability to obtain remote access to the system as an asterisk user. This issue is fixed in version 17.0.3.

State
PUBLISHED
Published
Nov 7, 2025
Updated
Feb 13, 2026
Evidence coverage
92%

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
    GitHub_M

    Record text: FreePBX Administration GUI is Vulnerable to Authenticated Command Injection

    Inspect raw assertion
    Field
    container
    Value
    FreePBX Administration GUI is Vulnerable to Authenticated Command Injection
    Original evidence ↗
  3. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Sangoma FreePBX OS Command Injection Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Sangoma FreePBX OS Command Injection Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 84.62% probability · 99.69th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.846180000000; percentile 0.996870000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Feb 3, 2026 · first observed Jul 19, 2026

Exploit likelihood84.62%

FIRST EPSS · score date Aug 27, 2026 · 99.7th percentile · first observed Aug 27, 2026

SeverityCVSS 8.6

GitHub_M · CVSS 4.0 · 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 ↗
GitHub_MOriginal assertion
Record text

FreePBX Administration GUI is Vulnerable to Authenticated Command Injection

Inspect raw assertion
Field
container
Value
FreePBX Administration GUI is Vulnerable to Authenticated Command Injection
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Sangoma FreePBX OS Command Injection Vulnerability

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

84.62% probability · 99.69th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.846180000000; percentile 0.996870000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
1Underlying assertions
1Canonical products
1Target assertions
0Constraint assertions

Grouped from 1 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

2 scope groups

GitHub_M · source assertedFreePBXfilestoreDirect source scope
Affected: >= 17.0.2.36, < 17.0.3
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": ">= 17.0.2.36, < 17.0.3"}]
NVD CPE · APPLICATIONsangomafilestoreVulnerable target · 1 assertions
Any version (unconstrained) (>= 17.0.2.36, < 17.0.3)Canonical identity product-9ab4c52f5fc55ee461438f25a85dc55d2fec60f39b75c0789176293fc5e36d29Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:sangoma:filestore:*:*:*:*:*:freepbx:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 17.0.2.36; through excluding 17.0.3
    Match ID
    c4e7aaac-2335-4033-8c38-7e20e764ba41

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-b6d5eaf551280d2272ad0ea33176117b6f2e01bfd9f4329131b7c034fb6feda7 · product-9ab4c52f5fc55ee461438f25a85dc55d2fec60f39b75c0789176293fc5e36d29

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
76c3341c-112e-4185-8e2d-a261802cbb96
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
b260d643-62fd-457d-8176-11e9a3a36d6c

Assessments

CVSS by origin

7.2
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.6
security-advisories@github.comCVSS 4.0 · role Secondary · priority eligiblevalid_matchCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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
8.6
GitHub_MCVSS 4.0 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Direct CVE/CNA normalized decisions

8.6Priority eligible

GitHub_M

CVSS 4.0 · Primary · Original assertion · rank 1

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Validation
Valid match
Recomputed
8.6
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.