CVE-2020-24588

Ieee 802.11 vulnerability

CVSS

3.5

EPSS

3.5%

EPSS pct

88th

Exploited

No known

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets.

Affected vendor

Ieee

Affected product

Ieee 802.11

CVSS vector

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

Weakness type (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

Published

2021-05-11

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable from an adjacent network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to integrity.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2020-24588

Confirm whether Ieee Ieee 802.11 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-24588.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-24588

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-24588 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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