CVE-2026-2967
A security vulnerability has been detected in Cesanta Mongoose up to 7.20.
Published Feb 23, 2026 · updated Jun 17, 2026 · cesanta mongoose
A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is reported as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Code
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No public source repository is identified for this product.
Timeline
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Feb 23, 2026 · NIST NVD
Detected
A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is reported as difficult. The
Jun 17, 2026 · NIST NVD
Updated
A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The attack may be initiated remotely. The attack's complexity is rated as high. The exploitability is reported as difficult. The
Affected
- cpe cesanta/mongooseversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-2967
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-2967
A security vulnerability has been detected in Cesanta Mongoose up to 7.20. This affects the function getpeer of the file /src/net_builtin.c of the component TCP Sequence Number Handler. The manipulation leads to improper verification of source of a communication channel. The atta
nvd.nist.gov