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Vulnerability record · CVE-2020-26141 · published 11 May 2021

CVE-2020-26141: Alfa awus036h firmware vulnerability

Alfa · Awus036h Firmware

An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol.

6.5 CVSS 3.1 Medium EPSS 3.1% · top 12.9% CWE-354 · CWE-354
6.5CVSS 3.1 base score, v2 3.3
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
95Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol.

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

Affected products

95 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://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
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 Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing ListThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory
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 Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-019200.html
https://cert-portal.siemens.com/productcert/html/ssa-913875.html

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

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Source: NIST National Vulnerability Database (record CVE-2020-26141), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.