CVE-2020-26140: alfa awus036h_firmware
Vulnerability summary
CVE-2020-26140 is a medium (CVSS 6.5) vulnerability in alfa awus036h_firmware. EPSS estimates a 2.92% chance of exploitation in the next 30 days, higher than 86.8% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 2Timeline
- 11-05-2021PublishedVulnerability first disclosed.
- 08-10-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
2.92%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
0.00 pp
From 2.92% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco133 products
Ubuntu51 products
- linuxAll versions (No fix recorded)
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Alfa1 product
- awus036h_firmware6.1316.1209
4 vendors · 200 products · Showing 200 of 364. Use Open JSON for the complete list.
References
12 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWuVendor AdvisoryX Refsource CISCOThird Party Advisory
- www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63X Refsource MISCThird Party Advisory