An issue was discovered on AudioCodes VoIP desk phones through 3.4.4.1000.

published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-27056

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits: 0; none known

An issue was discovered on AudioCodes VoIP desk phones through 3.4.4.1000. The validation of firmware images only consists of simple checksum checks for different firmware components. Thus, by knowing how to calculate and where to store the required checksums for the flasher tool, an attacker is able to store malicious firmware.

Patch / fix

fixed in 1

audiocodes_ltd voip_phones 3.4.4.1000

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-10-10)

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

syss.de https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2022-055.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

audiocodes_ltd voip_phones

Classification

Weakness

CWE-345 Insufficient Verification of Data Authenticity

References

syss.de /fileadmin/dokumente/Publikationen/Advisories/SYSS-2022-055.txt
exploit, vendor-advisory
syss.de
not-applicable
seclists.org /fulldisclosure/2023/Aug/17
mailing-list, third-party-advisory
packetstormsecurity.com /files/174214/AudioCodes-VoIP-Phones-Insufficient-Firmware-Validation.html
third-party-advisory, vdb-entry

Sources

CVE List CVE-2023-22955
NVD CVE-2023-22955

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary