CVE-2026-2967

Published Feb 23, 2026

Last updated 9 days ago

Overview

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.
Source
cna@vuldb.com
NVD status
Analyzed
Products
mongoose

Risk scores

CVSS 4.0

Type
Secondary
Base score
2.9
Impact score
-
Exploitability score
-
Vector string
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/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
Severity
LOW

CVSS 3.1

Type
Primary
Base score
3.7
Impact score
1.4
Exploitability score
2.2
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Severity
LOW

CVSS 2.0

Type
Secondary
Base score
2.6
Impact score
2.9
Exploitability score
4.9
Vector string
AV:N/AC:H/Au:N/C:N/I:N/A:P

Weaknesses

cna@vuldb.com
CWE-940

Social media

Hype score
Not currently trending

Configurations