CVE-2026-2329: grandstream gxp1610_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2026-2329 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in grandstream gxp1610_firmware. EPSS estimates a 41.72% chance of exploitation in the next 30 days, higher than 98.6% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 18-02-2026
   PublishedVulnerability first disclosed.
2. 18-02-2026
   Last modifiedVulnerability information updated.

Description

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.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).