CVE-2026-8836
Critical · 9.8CVSS
9.8
EPSS
1.6%
Published
May 18, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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