Home

Description

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.

PUBLISHED Reserved 2026-05-18 | Published 2026-05-18 | Updated 2026-05-18 | Assigner VulDB




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C
CRITICAL: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C
10.0AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:OF/RC:C

Problem types

Stack-based Buffer Overflow

Memory Corruption

Timeline

2026-05-18:Advisory disclosed
2026-05-18:VulDB entry created
2026-05-18:VulDB entry last update

Credits

0rbitingZer0 (VulDB User) reporter

References

vuldb.com/vuln/364474 (VDB-364474 | lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow) vdb-entry technical-description

vuldb.com/vuln/364474/cti (VDB-364474 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/829798 (Submit #829798 | lwIP 2.1.0 Stack-based Buffer Overflow) third-party-advisory

savannah.nongnu.org/bugs/?68194 broken-link

cgit.git.savannah.gnu.org/...054eb6c8205e9c9d1d05d90ada3898c broken-link patch

github.com/...ommit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c patch

cve.org (CVE-2026-8836)

nvd.nist.gov (CVE-2026-8836)

Download JSON