CVE-2026-54675

FreePBX: Authenticated Remote Code Execution via File Upload and Convert in Soundlang Module

HIGH
8.8
CVSS Score
Published: September 28, 2026 at 05:40 PM UTC
Updated: October 16, 2026 at 06:21 PM UTC
2 products affected across 2 vendorsFreePBXSecurity Reporting

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Severity
HIGH8.8
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

FreePBX is an open source IP PBX. Prior to versions 16.0.10 and 17.0.5, a critical vulnerability exists in the sound language upload and conversion functionality that allows an authenticated attacker to perform arbitrary file writes, leading directly to remote code execution (RCE). Authentication with a known username is required. The vulnerability stems from insufficient path sanitization in the file conversion process, enabling path traversal attacks that place malicious PHP files in the web server's root directory. This issue has been patched in versions 16.0.10 and 17.0.5.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

16.0 ≤ v < 16.0.1017.0 ≤ v < 17.0.5
v < 16.0.10v < 17.0.5
Affected range stops below 16.0.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 17.0.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-22CWE-73CWE-434

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