CVE-2026-2329 in the critical feed json
Grandstream GXP1600 VoIP Phones - Unauthenticated stack buffer overflow
published 2026-02-18 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-8089
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 41.7%
- EPSS 41.7% chance of exploitation in 30 days, percentile 98%
- public exploits
- 1
- Metasploit
Summary
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.
Patch / fix
- grandstream gxp1610_firmware 1.0.7.81
- grandstream gxp1615_firmware 1.0.7.81
- grandstream gxp1620_firmware 1.0.7.81
- grandstream gxp1625_firmware 1.0.7.81
- grandstream gxp1628_firmware 1.0.7.81
- grandstream gxp1630_firmware 1.0.7.81
- github.com/rapid7/metasploit-framework#20983 pull request
Timeline
- First public exploit (Metasploit exploit/linux/http/grandstream_gxp1600_unauth_rce)
- Published
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
41.72% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/linux/http/grandstream_gxp1600_unauth_rce GrandStream GXP1600 Unauthenticated Remote Code Execution metasploit exploit, great rank, 2026-02-18
- github.com https://github.com/rapid7/metasploit-framework/pull/20983 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Grandstream GXP1610
- Grandstream GXP1615
- Grandstream GXP1620
- Grandstream GXP1625
- Grandstream GXP1628
- Grandstream GXP1630
Classification
- Weakness
-
- CWE-121 Stack-based Buffer Overflow
References
-
github.com
/rapid7/metasploit-framework/pull/20983
exploit, patch, vdb-entry
-
psirt.grandstream.com
/
vendor-advisory
-
rapid7.com
/blog/post/ve-cve-2026-2329-critical-unauthenticated-stack-buffer-overflow-in-grandstream-gxp1600-voip-phones-
third-party-advisory, vdb-entry
-
firmware.grandstream.com
/Release_Note_GXP16xx_1.0.7.81.pdf
release-notes, product
Sources
- CVE List CVE-2026-2329
- NVD CVE-2026-2329
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.