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CVE-2020-26147

Published: May 11, 2021Updated: Apr 14, 2026 Sources: CVE List NVD BDU csafNVD-CWE-Other
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
7.6%
Top 6.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.

CVSS Vector Breakdown

AV:AAC:HPR:NUI:RS:UC:LI:HA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

NVD-CWE-Other

Affected Products

linux kernellinux
On-premOS
Operating Systems
debian linuxdebian
On-premOS
Operating Systems / linux-distro
c-75 firmwarearistaNetworking Infrastructure
o-90 firmwarearistaNetworking Infrastructure
c-65 firmwarearistaNetworking Infrastructure
linuxoss-projectOperating Systemsaka the linux kernel
debianoss-projectGBOperating Systemsaka debian gnu/linux
aristacommercialUSNetworking Infrastructure
and 22 more affected products View all →

Exploitability

Official Patch Available

References

http://www.openwall.com/lists/oss-security/2021/05/11/12
openwall.com
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
cert-portal.siemens.com
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
github.com
and 86 more references View all →

Timeline

Published
May 11, 2021
Last Updated
Apr 14, 2026

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