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Vulnerability record · CVE-2020-24586 · published 11 May 2021

CVE-2020-24586: Ieee 802.11 vulnerability

Ieee · Ieee 802.11

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.

3.5 CVSS 3.1 Low EPSS 5.8% · top 7.2%
3.5CVSS 3.1 base score, v2 2.9
5.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
24Affected product versions listed by NVD
18References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.

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

Affected products

24 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing ListThird Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory
https://www.fragattacks.com ExploitThird Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing ListThird Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory
https://www.fragattacks.com ExploitThird Party Advisory
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html Third Party Advisory

Track CVE-2020-24586 inside VULONE

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-24586), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.