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Insufficiently Protected CredentialsWeakness · CWE-522

CVE-2025-55739

MEDIUM · 5.1 CVSS v4.0 Published 2025-09-05
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
55/100
Remediation priority · Elevated
Remotely reachable Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
api is a module for FreePBX@, which is an open source GUI that controls and manages Asterisk© (PBX). In versions lower than 15.0.13, 16.0.2 through 16.0.14, 17.0.1 and 17.0.2, there is an identical OAuth private key used across multiple systems that installed the same FreePBX RPM or DEB package. An attacker with access to the shared OAuth private key could forge JWT tokens, bypass authentication, and potentially gain full access to both REST and GraphQL APIs. Systems with the "api" module enabled, configured and previously activated by an administrator for remote inbound connections may be affected. This issue is fixed in versions 15.0.13, 16.0.15 and 17.0.3.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-522

Credentials are stored or transmitted without adequate protection, so an attacker who reaches them can reuse them directly. One weak link here can unravel an entire system. Remediation means strong hashing for stored secrets, encryption in transit, and never writing credentials to logs.

General guidance for the insufficiently protected credentials class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
Authentication
X
User interaction
P
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/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

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix High confidence

15.0.13 (for FreePBX 15.x), 16.0.15 (for FreePBX 16.x), or 17.0.3 (for FreePBX 17.x)

  1. Identify the current FreePBX major version (15, 16, or 17) and the api module version using the FreePBX admin interface or fwconsole commands
  2. Upgrade the api module to the fixed version: 15.0.13 for FreePBX 15.x, 16.0.15 for FreePBX 16.x, or 17.0.3 for FreePBX 17.x
  3. Run 'fwconsole ma upgrade api' or use the FreePBX Module Admin to perform the upgrade
  4. After upgrading, verify the api module version reflects the fixed release
  5. If possible, regenerate any OAuth keys/tokens to ensure new secure keys are in use
Caveat Standard module upgrade; ensure backups exist before upgrading in production environments

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-55739 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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