CVE-2025-27558

9.1 criticalEPSS 0.3%

Critical (9.1). EPSS 0.3% chance of exploitation in the next 30 days.

IEEE P802.11-REVme D1.1 through D7.0 allows FragAttacks against mesh networks. In mesh networks using Wi-Fi Protected Access (WPA, WPA2, or WPA3) or Wired Equivalent Privacy (WEP), an adversary can exploit this vulnerability to inject arbitrary frames towards devices that support receiving non-SSP A-MSDU frames. NOTE: this issue exists because of an incorrect fix for CVE-2020-24588. P802.11-REVme, as of early 2025, is a planned release of the 802.11 standard.

Severity

CVSS 3.1

9.1 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
CWE: CWE-345
Published: 2025-05-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/vanhoefm/fragattacks-survey-public/blob/main/README.md
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html

Check your stack JSON