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VulnerabilityPublished Updated

CVE-2025-27558: IEEE P802.11-REVme D1.1 · Insufficient Verification of Data Authenticity

Source GCVE Database

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Mentioned vulnerabilities

Not known to be exploited · CVSS 9.1 Critical.

Data as of 29 Oct 2026, 23:45 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CISA-ADPCVSS 3.19.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 May 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

Users and implementers should monitor the IEEE standards body for updates and official fixes. Until a fix is released, caution is advised when deploying mesh networks using these draft versions. Vendor advisories or device manufacturers may provide interim mitigations or firmware updates once the standard is finalized and fixes are incorporated.

Description

CVE-2025-27558 is a critical vulnerability in the IEEE P802.11-REVme draft standard versions D1.1 through D7.0. It allows FragAttacks against mesh networks using WPA, WPA2, WPA3, or WEP. An attacker can inject arbitrary frames to devices that accept non-SSP A-MSDU frames due to insufficient verification of data authenticity. This vulnerability stems from an incorrect fix for a previous issue (CVE-2020-24588).

References

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