EUVD Vulnerability Catalog
EUVD-2026-30793
Severity: CRITICAL
Base Score: 9.3
CVSS Version: 4.0
Vulnerability 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. Two separate issue reports were submitted to the project. Their processing was merged as a duplicate.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: 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:P
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Attack Vector (AV): Network
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Attack Complexity (AC): Low
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Attack Requirements (AT): None
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Privileges Required (PR): None
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User Interaction (UI): None
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Vulnerability Confidentiality Impact (VC): High
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Vulnerability Integrity Impact (VI): High
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Vulnerability Availability Impact (VA): High
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Subsequent Confidentiality Impact (SC): None
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Subsequent Integrity Impact (SI): None
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Subsequent Availability Impact (SA): None
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E: P
Affected Vendors & Systems
Vendor
n/a
References & Advisory Links
- https://vuldb.com/vuln/364474
- https://vuldb.com/vuln/364474/cti
- https://vuldb.com/cve/CVE-2026-8836
- https://vuldb.com/submit/829798
- https://savannah.nongnu.org/bugs/?68055
- https://cgit.git.savannah.gnu.org/cgit/lwip.git/commit/?id=0c957ec03054eb6c8205e9c9d1d05d90ada3898c
- https://github.com/lwip-tcpip/lwip/commit/0c957ec03054eb6c8205e9c9d1d05d90ada3898c
- https://savannah.nongnu.org/bugs/?68194
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
VulDB
EPSS Probability
1.02
Known Aliases
CVE-2026-8836
GHSA-3w8m-3w76-f6mh
Published On
2026-05-18
Last Updated
2026-08-22