CVE-2025-34329 is a critical unauthenticated arbitrary file upload vulnerability affecting AudioCodes Fax Server and Auto-Attendant IVR appliances up to version 2.6.23. An attacker can upload malicious files to the server via the F2MAdmin web interface, specifically through the ajaxBackupUploadFile.php endpoint, without any authentication or file-type validation. This allows for remote code execution with NT AUTHORITY\SYSTEM privileges on default Windows deployments by manipulating web server or interpreter configuration files. The vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion, indicating awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.6.23CPE matchmatch criteria | cpe:2.3:a:audiocodes:fax_server:*:*:*:*:*:*:*:* | ||
<= 2.6.23CPE matchmatch criteria | cpe:2.3:a:audiocodes:interactive_voice_response:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.