How severe is CVE-2023-22955?

CVE-2023-22955 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-22955 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22955?

CVE-2023-22955 primarily affects Audiocodes 445hd Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-22955?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-22955 published?

CVE-2023-22955 was published on 2023-08-11 and last updated on 2026-06-17.

CVE-2023-22955

CVE-2023-22955 is a high-severity vulnerability in Audiocodes 445hd Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Audiocodes 445hd Firmware
Published: 2023-08-11
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-22955?: 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.
How severe is CVE-2023-22955?: CVE-2023-22955 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-22955 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22955?: CVE-2023-22955 primarily affects Audiocodes 445hd Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-22955?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-22955 published?: CVE-2023-22955 was published on 2023-08-11 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:audiocodes:445hd_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:audiocodes:405hd_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:audiocodes:c450hd_firmware:*:*:*:*:*:*:*:*

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CVE-2023-22957 — High (CVSS 7.5): An issue was discovered in libac_des3.so on AudioCodes VoIP desk phones through 3.4.4.1000. Due to the use of…
CVE-2023-22956 — High (CVSS 7.5): An issue was discovered on AudioCodes VoIP desk phones through 3.4.4.1000. Due to the use of a hard-coded cryptographic…

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