CVE-2025-27558CRITICAL 9.1EPSS p18.3%

CVE-2025-27558CVE-2025-27558

Description

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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.27% probability of exploitation · percentile 18.3% · 2026-06-19T12:03:05Z
Published2025-05-21
Last modified2026-04-15

Underlying weaknesses· 1

CWE-345

References

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

1

TypeTargetConfidenceTier
WeaknessInsufficient Verification of Data Authenticitycwe-3450%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.