CVE-2020-24588
CVE-2020-24588 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. The underlying weakness is classified as CWE-327.
Key facts
- Severity: Low (CVSS 3.x base score 3.5)
- CVSS v2: 2.9
- EPSS exploit prediction: 4% (88th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-327
- 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 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.
Frequently asked questions
- What is CVE-2020-24588?
- 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.
- How severe is CVE-2020-24588?
- CVE-2020-24588 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 none, integrity low, and availability none.
- Is CVE-2020-24588 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24588?
- CVE-2020-24588 primarily affects Ieee Ieee 802.11. In total, 200 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-24588?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-24588 published?
- CVE-2020-24588 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://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
- 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
- https://cert-portal.siemens.com/productcert/html/ssa-019200.html
- https://cert-portal.siemens.com/productcert/html/ssa-913875.html
Affected products (200)
- cpe:2.3:a:ieee:ieee_802.11:*:*:*:*:*:*:*:*
- cpe:2.3:a:linux:mac80211:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2012:-:r2:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_w1748-1_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w1750d_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:scalance_w1788-1_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w1788-2_firmware:-:*:*:*:*:*:eec_m12:*
- cpe:2.3:o:siemens:scalance_w1788-2_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w1788-2ia_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w721-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w722-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w734-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w738-1_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w748-1_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w748-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w761-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w774-1_firmware:-:*:*:*:*:*:m12_eec:*
- cpe:2.3:o:siemens:scalance_w774-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w778-1_firmware:-:*:*:*:*:*:m12:*
- cpe:2.3:o:siemens:scalance_w778-1_firmware:-:*:*:*:*:*:m12_eec:*
- cpe:2.3:o:siemens:scalance_w786-1_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w786-2_firmware:-:*:*:*:*:*:rj45:*
- cpe:2.3:o:siemens:scalance_w786-2_firmware:-:*:*:*:*:*:sfp:*
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