Vulnerability Monitor

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CVE-2020-26143

An issue was discovered in the ALFA Windows 10 driver 1030.36.604 for AWUS036ACH. The WEP, WPA, WPA2, and WPA3 implementations accept fragmented plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 12 products from alfa, from alfa, from arista and 9 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-05-11T20:15:08.800

Last Modified

2024-11-21T05:19:21.450

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:N/I:P/A:N

Access Vector: ADJACENT_NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

6.5

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	alfa	awus036h_firmware	1030.36.604	Yes
Hardware	alfa	awus036h	-	No
Operating System	arista	c-75_firmware	-	Yes
Hardware	arista	c-75	-	No
Operating System	arista	o-90_firmware	-	Yes
Hardware	arista	o-90	-	No
Operating System	arista	c-65_firmware	-	Yes
Hardware	arista	c-65	-	No
Operating System	arista	w-68_firmware	-	Yes
Hardware	arista	w-68	-	No
Operating System	siemens	scalance_w700_ieee_802.11n_firmware	*	Yes
Hardware	siemens	scalance_w700_ieee_802.11n	-	No

References

http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing List, Third Party Advisory ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory ([email protected])
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory ([email protected])
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory ([email protected])
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory ([email protected])
https://www.fragattacks.com Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/05/11/12 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.fragattacks.com Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For alfa's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.