Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-26141

23
FAUCET Score

CVE-2020-26141 is a medium-severity vulnerability affecting the ALFA Windows 10 driver for AWUS036H, and potentially other Wi-Fi devices from vendors like Cisco and Siemens. The flaw lies in the Wi-Fi implementation's failure to verify the Message Integrity Check of fragmented TKIP frames, allowing an adjacent attacker to inject and potentially decrypt packets in WPA/WPA2 networks utilizing TKIP. With a CVSS score of 6.5, this vulnerability has a low attack complexity and can lead to high integrity impact without user interaction. While not listed in CISA's KEV catalog, and with no public exploit code (Metasploit, Nuclei, ExploitDB) available, it has garnered some community discussion and media coverage as part of the broader "FragAttacks" disclosures.

Impacted Technologies

VendorProductVersion(s)CPE
6.1316.1209CPE matchmatch criteria
cpe:2.3:o:alfa:awus036h_firmware:6.1316.1209:*:*:*:*:windows_10:*:*
< 27.7.1CPE matchmatch criteria
cpe:2.3:o:cisco:meraki_gr10_firmware:*:*:*:*:*:*:*:*
< 27.7.1CPE matchmatch criteria
cpe:2.3:o:cisco:meraki_gr60_firmware:*:*:*:*:*:*:*:*
< 27.7.1CPE matchmatch criteria
cpe:2.3:o:cisco:meraki_mr20_firmware:*:*:*:*:*:*:*:*
< 27.7.1CPE matchmatch criteria
cpe:2.3:o:cisco:meraki_mr30h_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.07%
Probability of exploitation in next 30 days
EPSS Percentile
86.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0307 is in the 97th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-348.rt7.130.el8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-348.el8
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-alt

Vendor Advisories (1)

redhatCVE-2020-26141Moderate

kernel: not verifying TKIP MIC of fragmented frames

May 11, 2021

References

cert-portal.siemens.com / productcert/html/ssa-019200.html
cert-portal.siemens.com / productcert/html/ssa-913875.html
cert-portal.siemens.com / productcert/pdf/ssa-913875.pdf
Third Party Advisory
github.com / vanhoefm/fragattacks/blob/master/SUMMARY.md
Third Party Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
Third Party Advisory
arista.com / en/support/advisories-notices/security-advisories/12602-security-advisory-63
Third Party Advisory
fragattacks.com
Third Party Advisory
openwall.com / lists/oss-security/2021/05/11/12
Mailing ListThird Party Advisory