CVE-2025-34335
published 2025-11-19CVE-2025-34335: AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 expose an authenticated command injection vulnerability in the…
PriorityP264high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
2.56%
83.1th percentile
AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 expose an authenticated command injection vulnerability in the license activation workflow handled by AudioCodes_files/ActivateLicense.php. When a license file is uploaded, the application derives a new filename by combining a generated base name with the attacker-controlled extension portion of the original upload name, then constructs a command line for fax_server_lic_cmdline.exe that includes this path. The extension value is incorporated into the command string without input validation, escaping, or proper argument quotation before being passed to exec(). An authenticated user with access to the license upload interface can supply a specially crafted filename whose extension injects additional shell metacharacters, causing arbitrary commands to be executed as NT AUTHORITY\\SYSTEM.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| audiocodes | fax_server | <= 2.6.23 | — |
| audiocodes | interactive_voice_response | < 2.6.23 | 2.6.23 |
| audiocodes_limited | audiocodes_fax_ivr_appliance | <= 2.6.23 | — |
| msrc | cbl2_exiv2_0.27.5-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.08.7HIGHCVSS: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
vendor_msrc5.5MEDIUM
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GHSA
GHSA-38qx-8m29-gqjv: AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2
ghsa_unreviewed·2025-11-19
CVE-2025-34335 [HIGH] CWE-78 GHSA-38qx-8m29-gqjv: AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2
AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 expose an authenticated command injection vulnerability in the license activation workflow handled by AudioCodes_files/ActivateLicense.php. When a license file is uploaded, the application derives a new filename by combining a generated base name with the attacker-controlled extension portion of the original upload name, then constructs a command line for fax_server_lic_cmdline.exe that includes this path. The extension value is incorporated into the command string without input validation, escaping, or proper argument quotation before being passed to exec(). An authenticated user with access to the license upload interface can supply a specially crafted filename whose extension injects additional s
Microsoft
Denial of service due to FPE in Exiv2::Internal::resolveLens0xffff
vendor_msrc·2021-08-10·CVSS 5.5
CVE-2021-34335 [MEDIUM] CWE-369 Denial of service due to FPE in Exiv2::Internal::resolveLens0xffff
Denial of service due to FPE in Exiv2::Internal::resolveLens0xffff
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
GitHub_M: GitHub_M
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Referen
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txthttps://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.htmlhttps://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdfhttps://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-authenticated-command-injection-via-activatelicense
2025-11-19
Published