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CVE-2025-34334

30
FAUCET Score

CVE-2025-34334 is an authenticated command injection vulnerability in AudioCodes Fax Server and Auto-Attendant IVR appliances up to version 2.6.23. An authenticated attacker can exploit a flaw in the fax test functionality (TestFax.php) to inject arbitrary shell commands. This allows for arbitrary command execution with SYSTEM privileges, as the generated batch files are executed by a service running as NT AUTHORITY\SYSTEM. The vulnerability has a CVSS score of 8.8 (High) due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is currently no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage regarding this CVE.

Impacted Technologies

VendorProductVersion(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 Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
3.48%
Probability of exploitation in next 30 days
EPSS Percentile
87.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0348 is in the 87th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

pierrekim.github.io / advisories/2025-audiocodes-fax-ivr.txt
ExploitThird Party Advisory
pierrekim.github.io / blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html
ExploitThird Party Advisory
audiocodes.com / media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf
Product
vulncheck.com / advisories/audiocodes-fax-ivr-appliance-authenticated-command-injection-via-testfax-and-lpe
Third Party Advisory