CVE-2026-63866: linux
CVSS: 8.8v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-63866DEBIAN-CVE-2026-63866
Published 19-07-2026Last modified 05-08-2026
Vulnerability summary
CVE-2026-63866 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 29.9% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.38%
0%100%
Low · +0.13 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 19-07-2026PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link routine.
CVSS metrics
5 scores · 4 sources · 2 versionsHigh 7.7Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NSourcesSingle source
High 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.38%
Chance of exploitation in the next 30 days
Percentile
30%
Versus all other CVEs
30-day change
+0.13 pp
From 0.24% on 19-09-2026
19-09-202619-10-2026
EPSS score0.38%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu118 products
- linux< 7.0.0-28.28
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 7.0.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 7.0.10-1
Linux1 product
- linux≥ dd82a9e02c054052b5899872c1f32805428f6131, < 455a48685feebf2d9c1656caad77f9ba1da7b06e | ≥ dd82a9e02c054052b5899872c1f32805428f6131, < c575459b485c47615491b1fd29f04b43fdc3da56 | ≥ dd82a9e02c054052b5899872c1f32805428f6131, < 88973240dc7c976dd320b36a9e6d925c9be083ae | 6.15
3 vendors · 120 products
