How severe is CVE-2018-16216?

CVE-2018-16216 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-16216 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-16216?

CVE-2018-16216 affects Audiocodes 405hd Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-16216?

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-2018-16216 published?

CVE-2018-16216 was published on 2019-04-25 and last updated on 2026-06-17.

CVE-2018-16216

CVE-2018-16216 is a high-severity vulnerability in Audiocodes 405hd Firmware with a CVSS 3.x base score of 8.0. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.0)
CVSS v2: 7.7
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Audiocodes 405hd Firmware
Published: 2019-04-25
Last modified: 2026-06-17

Description

A command injection (missing input validation, escaping) in the monitoring or memory status web interface in AudioCodes 405HD (firmware 2.2.12) VoIP phone allows an authenticated remote attacker in the same network as the device to trigger OS commands (like starting telnetd or opening a reverse shell) via a POST request to the web server. In combination with another attack (unauthenticated password change), the attacker can circumvent the authentication requirement.

Frequently asked questions

What is CVE-2018-16216?: A command injection (missing input validation, escaping) in the monitoring or memory status web interface in AudioCodes 405HD (firmware 2.2.12) VoIP phone allows an authenticated remote attacker in the same network as the device to trigger OS commands (like starting telnetd or opening a reverse shell) via a POST request to the web server. In combination with another attack (unauthenticated password change), the attacker can circumvent the authentication requirement.
How severe is CVE-2018-16216?: CVE-2018-16216 has a CVSS 3.x base score of 8.0, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-16216 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-16216?: CVE-2018-16216 affects Audiocodes 405hd Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-16216?: 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-2018-16216 published?: CVE-2018-16216 was published on 2019-04-25 and last updated on 2026-06-17.

References

https://www.sit.fraunhofer.de/fileadmin/dokumente/CVE/Advisory_AudioCodes_405HD.pdf

Affected products (1)

cpe:2.3:o:audiocodes:405hd_firmware:2.2.12:*:*:*:*:*:*:*

More vulnerabilities in Audiocodes 405hd Firmware

CVE-2018-16219 — High (CVSS 8.8): A missing password verification in the web interface in AudioCodes 405HD VoIP phone with firmware 2.2.12 allows an…
CVE-2023-22955 — High (CVSS 7.8): An issue was discovered on AudioCodes VoIP desk phones through 3.4.4.1000. The validation of firmware images only…
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…
CVE-2018-16220 — Medium (CVSS 6.1): Cross Site Scripting in different input fields (domain field and personal settings) in AudioCodes 405HD VoIP phone with…

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