CVE•Published 2026-08-26•Modified 2026-08-27•1 article on news•4 live references•NVD data
CVE-2026-80586
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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Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: options: reset DSS fields in case of unexpected size A remote peer could send a malformed DSS with a wrong size, followed by another DSS or MPC + Data. In this case, the first suboption will be ignored, but leaving some fields written, which could lead to inconsistency or access uninitialized data. Explicitly reset the fields that could have been modified in case of unexpected size.
Timeline
Published 2026-08-26
Modified 2026-08-27
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-2026-80586Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-80586Censys host search filtered to this CVE id.
grep.app
CVE-2026-80586Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-80586GitHub code search for direct mentions.
Google dork
"CVE-2026-80586" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.