How severe is CVE-2023-22956?

CVE-2023-22956 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-22956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22956?

CVE-2023-22956 primarily affects Audiocodes C470hd Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-22956?

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-2023-22956 published?

CVE-2023-22956 was published on 2023-08-11 and last updated on 2026-06-17.

CVE-2023-22956

CVE-2023-22956 is a high-severity vulnerability in Audiocodes C470hd Firmware with a CVSS 3.x base score of 7.5. 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-798.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Audiocodes C470hd 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. Due to the use of a hard-coded cryptographic key, an attacker is able to decrypt encrypted configuration files and retrieve sensitive information.

Frequently asked questions

What is CVE-2023-22956?: An issue was discovered on AudioCodes VoIP desk phones through 3.4.4.1000. Due to the use of a hard-coded cryptographic key, an attacker is able to decrypt encrypted configuration files and retrieve sensitive information.
How severe is CVE-2023-22956?: CVE-2023-22956 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-22956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22956?: CVE-2023-22956 primarily affects Audiocodes C470hd Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-22956?: 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-2023-22956 published?: CVE-2023-22956 was published on 2023-08-11 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:audiocodes:c470hd_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:audiocodes:c455hd_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:audiocodes:c435hd_firmware:*:*:*:*:*:*:*:*
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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