CVE-2026-2329

high-risk
Published 2026-02-18

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.

Do I need to act?

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34.8% chance of exploitation in next 30 days
EPSS score — higher than 65% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (6)

Gxp1610 Firmware
Gxp1615 Firmware
Gxp1620 Firmware
Gxp1625 Firmware
Gxp1628 Firmware
Gxp1630 Firmware

Affected Vendors

Grandstream

References (4)

Product https://firmware.grandstream.com/Release_Note_GXP16xx_1.0.7.81.pdf
VDB Entry https://github.com/rapid7/metasploit-framework/pull/20983
Vendor Advisory https://psirt.grandstream.com/
Third Party Advisory https://www.rapid7.com/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack...
61
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 16/34 · Moderate
Exposure 13/34 · Low