CVE-2020-24586
CVE-2020-24586 is a low-severity vulnerability in Ieee Ieee 802.11 with a CVSS 3.x base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Low (CVSS 3.x base score 3.5)
- CVSS v2: 2.9
- EPSS exploit prediction: 6% (92nd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Ieee Ieee 802.11
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-24586?
- 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.
- How severe is CVE-2020-24586?
- CVE-2020-24586 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2020-24586 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24586?
- CVE-2020-24586 primarily affects Ieee Ieee 802.11. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-24586?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-24586 published?
- CVE-2020-24586 was published on 2021-05-11 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2021/05/11/12
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
- https://www.fragattacks.com
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html
Affected products (24)
- cpe:2.3:a:ieee:ieee_802.11:*:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:linux:mac80211:-:*:*:*:*:*:*:*
- cpe:2.3:o:arista:c-250_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:arista:c-260_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:arista:c-230_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:arista:c-235_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:arista:c-200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ax210_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ax201_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ax200_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_9560_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_9462_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_9461_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_9260_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_8265_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_8260_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_3168_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_7265_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_3165_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ax1675_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ax1650_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:intel:ac_1550_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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