CVE-2026-2967

3.7 LOW
Published: February 23, 2026 Modified: February 23, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md
Source: cna@vuldb.com
Exploit Third Party Advisory
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/tcp_rst.md#poc
Source: cna@vuldb.com
Exploit Third Party Advisory
https://vuldb.com/?ctiid.347334
Source: cna@vuldb.com
Permissions Required VDB Entry
https://vuldb.com/?id.347334
Source: cna@vuldb.com
Third Party Advisory VDB Entry
https://vuldb.com/?submit.755450
Source: cna@vuldb.com
Third Party Advisory VDB Entry

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.7 / 10.0
EPSS (Exploit Probability)
0.1%
35th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

cesanta