CVE-2026-2329: Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow
An unauthenticated stack-based buffer overflow vulnerability exists in the HTTP API endpoint /cgi-bin/api.values.get. A remote attacker can leverage this vulnerability to achieve unauthenticated remote code execution (RCE) with root privileges on a target device. The vulnerability affects all six device models in the series: GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, and GXP1630.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2026-2329?
CVE-2026-2329 is classified as critical due to its potential for unauthenticated remote code execution.
How do I fix CVE-2026-2329?
To remediate CVE-2026-2329, update the firmware of the Grandstream GXP1600 VoIP Phones to the latest version provided by the vendor.
What type of vulnerability is CVE-2026-2329?
CVE-2026-2329 is an unauthenticated stack buffer overflow vulnerability located in the HTTP API endpoint.
Who is affected by CVE-2026-2329?
CVE-2026-2329 affects users of the Grandstream GXP1600 VoIP Phones.
Can CVE-2026-2329 be exploited remotely?
Yes, CVE-2026-2329 can be exploited remotely by attackers without authentication.