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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a lwIP affected
Version Status Constraints
2.1.0 affected —
2.1.1 affected —
2.1.2 affected —
2.1.3 affected —
2.2.0 affected —
2.2.1 affected —

No data.

No data.

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Project Subscriptions

Vendors Products
N Subscribe
Lwip Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c cve-icon cve-icon
https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c cve-icon cve-icon
https://savannah.nongnu.org/bugs/?68194 cve-icon cve-icon
https://vuldb.com/submit/829798 cve-icon cve-icon
https://vuldb.com/vuln/364474 cve-icon cve-icon
https://vuldb.com/vuln/364474/cti cve-icon cve-icon
History

Mon, 18 May 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 18 May 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title lwIP snmpv3 USM snmp_msg.c snmp_parse_inbound_frame stack-based overflow
First Time appeared N
N lwip
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:a:n:lwip:*:*:*:*:*:*:*:*
Vendors & Products N
N lwip
References
Metrics cvssV2_0

{'score': 10, 'vector': 'AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:OF/RC:C'}

cvssV3_0

{'score': 9.8, 'vector': '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'}

cvssV3_1

{'score': 9.8, 'vector': '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'}

cvssV4_0

{'score': 9.3, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-18T19:20:22.909Z

Reserved: 2026-05-18T14:20:09.110Z

Link: CVE-2026-8836

cve-icon Vulnrichment

Updated: 2026-05-18T19:20:17.080Z

cve-icon NVD

Status : Deferred

Published: 2026-05-18T19:16:28.533

Modified: 2026-05-18T19:26:31.620

Link: CVE-2026-8836

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-18T20:30:05Z

Weaknesses