CVE•Published 2026-05-18•Modified 2026-05-18•1 article on news•6 live references•NVD data
CVE-2026-8836
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
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Weaknesses (CWE)
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.
Timeline
Published 2026-05-18
Modified 2026-05-18
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-8836Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-8836Censys host search filtered to this CVE id.
grep.app
CVE-2026-8836Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-8836GitHub code search for direct mentions.
Google dork
"CVE-2026-8836" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.