CVE-2026-80933wifi: mt76: mt7996: validate default EEPROM firmware size
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: validate default EEPROM firmware size The default EEPROM firmware is parsed and copied as a full EEPROM without checking its length. A truncated file can make the driver read beyond the firmware buffer during variant validation or the fallback copy. Reject files shorter than MT7996_EEPROM_SIZE before parsing or copying the firmware.
Timeline
ID reserved
By Linux
- 16 days later
· 16 days later
Published
- 38 days later
· 38 days 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 98686cd21624c75a043e96812beadddf4f6f48e5 – < b4bf67cc0871b13103c404b38e332b9d4403a0da
- affected 98686cd21624c75a043e96812beadddf4f6f48e5 – < 127a291f4c8069a4e71906938402cacfe24ee8cd
- affected 98686cd21624c75a043e96812beadddf4f6f48e5 – < 03b81f015dbb29807ce1ec6d45537d658abdac69
- affected 98686cd21624c75a043e96812beadddf4f6f48e5 – < 7074ec3769820302f1ccf8794a40a6582153b820
- affected 98686cd21624c75a043e96812beadddf4f6f48e5 – < 653c6e289b13cc6942f3e8f8e3c568e70fa42d1f
- affected 6.2
- unaffected < 6.2
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.50 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References5
- https://git.kernel.org/stable/c/b4bf67cc0871b13103c404b38e332b9d4403a0da (opens in a new tab)
- https://git.kernel.org/stable/c/127a291f4c8069a4e71906938402cacfe24ee8cd (opens in a new tab)
- https://git.kernel.org/stable/c/03b81f015dbb29807ce1ec6d45537d658abdac69 (opens in a new tab)
- https://git.kernel.org/stable/c/7074ec3769820302f1ccf8794a40a6582153b820 (opens in a new tab)
- https://git.kernel.org/stable/c/653c6e289b13cc6942f3e8f8e3c568e70fa42d1f (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)
- EUVD EUVD-2026-76256 (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://cveledger.app/cve/CVE-2026-80933)Record last updated .