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CVE-2026-8836

CRITICAL
9.8
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-8836
State
PUBLISHED
Assigner
VulDB
Reserved
2026-05-18 14:20 UTC
Published
2026-05-18 18:45 UTC
Last updated
2026-05-23 08:54 UTC
Primary CWE
CWE-121
Stack-based Buffer Overflow
Vendor / Product
n/a / lwIP
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
n/a lwIP — 2.1.0, 2.1.1, 2.1.2, 2.1.3 …
Weakness (CWE)
CWESourceDescription
CWE-119 cna Memory Corruption
CWE-121 cna Stack-based Buffer Overflow
CVSS scores (4)
ScoreSeverityVersionSourceVector
10.0 N/D 2.0 cna AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:OF/RC:C
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C
9.8 CRITICAL 3.0 cna CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:X/RL:O/RC:C
9.3 CRITICAL 4.0 cna CVSS: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
References (6)
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