CVE-2026-2967

Low

Description

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.

SeverityLow
CVSS3.7
Exploit probability—
ProductCesanta Mongoose
PublishedFeb 23, 2026
First seenFeb 23, 2026
Weakness typeCWE-940CWE-940

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
cesanta mongoosev ≤ 7.20—

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