Grandstream GXP1610/GXP1615/GXP1620/GXP1625/GXP1628/GXP1630 up to 1.0.7.80 HTTP API Endpoint stack-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in Grandstream GXP1610, GXP1615, GXP1620, GXP1625, GXP1628 and GXP1630 up to 1.0.7.80. Affected by this vulnerability is an unknown functionality of the component HTTP API Endpoint. Such manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2026-2329. The attack may be launched remotely. There is no exploit available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Grandstream GXP1610, GXP1615, GXP1620, GXP1625, GXP1628 and GXP1630 up to 1.0.7.80. It has been rated as very critical. Affected by this issue is some unknown functionality of the component HTTP API Endpoint. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A 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). Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was shared by Stephen Fewer. The advisory is shared for download at rapid7.com. This vulnerability is handled as CVE-2026-2329 since 02/11/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/21/2026).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Vendor

• Grandstream

Name

• GXP1610
• GXP1615
• GXP1620
• GXP1625
• GXP1628
• GXP1630

Version

• 1.0.7.0
• 1.0.7.1
• 1.0.7.2
• 1.0.7.3
• 1.0.7.4
• 1.0.7.5
• 1.0.7.6
• 1.0.7.7
• 1.0.7.8
• 1.0.7.9
• 1.0.7.10
• 1.0.7.11
• 1.0.7.12
• 1.0.7.13
• 1.0.7.14
• 1.0.7.15
• 1.0.7.16
• 1.0.7.17
• 1.0.7.18
• 1.0.7.19
• 1.0.7.20
• 1.0.7.21
• 1.0.7.22
• 1.0.7.23
• 1.0.7.24
• 1.0.7.25
• 1.0.7.26
• 1.0.7.27
• 1.0.7.28
• 1.0.7.29
• 1.0.7.30
• 1.0.7.31
• 1.0.7.32
• 1.0.7.33
• 1.0.7.34
• 1.0.7.35
• 1.0.7.36
• 1.0.7.37
• 1.0.7.38
• 1.0.7.39
• 1.0.7.40
• 1.0.7.41
• 1.0.7.42
• 1.0.7.43
• 1.0.7.44
• 1.0.7.45
• 1.0.7.46
• 1.0.7.47
• 1.0.7.48
• 1.0.7.49
• 1.0.7.50
• 1.0.7.51
• 1.0.7.52
• 1.0.7.53
• 1.0.7.54
• 1.0.7.55
• 1.0.7.56
• 1.0.7.57
• 1.0.7.58
• 1.0.7.59
• 1.0.7.60
• 1.0.7.61
• 1.0.7.62
• 1.0.7.63
• 1.0.7.64
• 1.0.7.65
• 1.0.7.66
• 1.0.7.67
• 1.0.7.68
• 1.0.7.69
• 1.0.7.70
• 1.0.7.71
• 1.0.7.72
• 1.0.7.73
• 1.0.7.74
• 1.0.7.75
• 1.0.7.76
• 1.0.7.77
• 1.0.7.78
• 1.0.7.79
• 1.0.7.80

License

• commercial

CPE 2.3info

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CPE 2.2info

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