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CVE-2026-80587: Linux 5.6
CVE-2026-80587. CVSS 3.1 base score 9.8 (CRITICAL, Source advisory). EPSS 0.00403 (percentile 0.32905), scored 15-Oct-2026.
Affected technology
Linux · eda7acddf8080bb2d022a8d4b8b2345eb80c63ec to before 0e2210af439755a2af352eea4178261dcf61742e, eda7acddf8080bb2d022a8d4b8b2345eb80c63ec to before dc1d8d3eb345c616fbe922a010fa391c72c54d52, eda7acddf8080bb2d022a8d4b8b2345eb80c63ec to before 099bfcbd0c16ae9b50aba2a1bea033e63f895da7, eda7acddf8080bb2d022a8d4b8b2345eb80c63ec to before a04dcc784959e4702048785d87e0d029bd2fbdcb, eda7acddf8080bb2d022a8d4b8b2345eb80c63ec to before 6bab907292155513af397a12ccb488acbfc30d79, eda7acddf8080bb2d022a8d4b8b2345eb80c63ec to before b6ee361524641f57b2e2363f7737f20e17f67827
Linux
Linux · 5.6
Linux
Component: Not specified by the source
File: net/mptcp/options.c, net/mptcp/protocol.h
Attack conditions (Source advisory, CVSS 3.1): Network (remote) · No privileges required · No user interaction required
What an attacker can do
Source advisory’s CVSS 3.1 assessment (base score 9.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.
- CCR priority
- 39.3 /100 (P4)
- CVSS 3.1
- 9.8 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · Source advisory
- EPSS
- 0.00403 · percentile 0.32905 · 2026-10-15
- KEV
- no
Provenance
- NVD CVE API 2.0 · Source record · observed 2026-10-16 20:20:42.059737+00:00 UTC
Stable permalink: https://cybercodered.org/item/cve-cve-2026-80587.html