What’s Vulnerable › Vulnerabilities

CVE-2020-26140

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-11 · updated 2026-10-08
• Weakness: CWE-327

Description

An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.

Affected products

• Alfa Awus036H Firmware: 6.1316.1209
• Arista C-100 Firmware: all versions
• Arista C-110 Firmware: all versions
• Arista C-120 Firmware: all versions
• Arista C-130 Firmware: all versions
• Arista C-200 Firmware: all versions
• Arista C-230 Firmware: all versions
• Arista C-235 Firmware: all versions
• Arista C-250 Firmware: all versions
• Arista C-260 Firmware: all versions
• Arista C-65 Firmware: all versions
• Arista C-75 Firmware: all versions
• Arista O-105 Firmware: all versions
• Arista O-90 Firmware: all versions
• Arista W-118 Firmware: all versions
• Arista W-68 Firmware: all versions
• Cisco 1100-4P Firmware: all versions
• Cisco 1100-8P Firmware: all versions
• Cisco 1100 Firmware: all versions
• Cisco 1101-4P Firmware: all versions
• Cisco 1109-2P Firmware: all versions
• Cisco 1109-4P Firmware: all versions
• Cisco Aironet 1532 Firmware: all versions
• Cisco Aironet 1542D Firmware: all versions
• Cisco Aironet 1542I Firmware: all versions
• Cisco Aironet 1552 Firmware: all versions
• Cisco Aironet 1552H Firmware: all versions
• Cisco Aironet 1560 Firmware: all versions
• Cisco Aironet 1562D Firmware: all versions
• Cisco Aironet 1562E Firmware: all versions

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://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
• 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://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

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