CVE-2026-8836

A vulnerability was found in lwIP up to 2.2.1. Affected is the function snmp_parse_inbound_frame of the file src/apps/snmp/snmp_msg.c of the component snmpv3 USM Handler. Performing a manipulation of the argument msgAuthenticationParameters results in stack-based buffer overflow. The attack may be initiated remotely. The patch is named 0c957ec03054eb6c8205e9c9d1d05d90ada3898c. It is suggested to install a patch to address this issue. Two separate issue reports were submitted to the project. Their processing was merged as a duplicate.

Affected products

Linuxmint, Ubuntu, Lwip

Fix

Available

CVSS 2.0

10.0 HIGH

CVSS 3.1

9.8 CRITICAL

EPSS

1.1% (63th percentile)

Weakness

CWE-119, CWE-121

NVD status

Deferred

Published

2026-05-18