CVE-2026-2329: Grandstream GXP1610 Firmware

Critical severity, CVSS 9.8. EPSS: 41.3% chance of exploitation in the next 30 days.

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 products

• Grandstream GXP1610 Firmware: before 1.0.7.81 (fixed in 1.0.7.81)
• Grandstream GXP1615 Firmware: before 1.0.7.81 (fixed in 1.0.7.81)
• Grandstream GXP1620 Firmware: before 1.0.7.81 (fixed in 1.0.7.81)
• Grandstream GXP1625 Firmware: before 1.0.7.81 (fixed in 1.0.7.81)
• Grandstream GXP1628 Firmware: before 1.0.7.81 (fixed in 1.0.7.81)
• Grandstream GXP1630 Firmware: before 1.0.7.81 (fixed in 1.0.7.81)

Published 2026-02-18. Last modified 2026-06-17.