CVE-2020-26147
An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Timeline
ID reserved
By mitre
- 7 months later
· 7 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N |
- EPSS (exploitation in 30 days)
- 7.6% · top 5.4% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (10)
- 20210511 Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 2021 (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- https://www.fragattacks.com (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20210511 various 802.11 security issues - fragattacks.com (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63 (opens in a new tab)x_refsource_MISCx_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-913875.html (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-019200.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-26147)Record last updated .