Vulnerability details
CVE-2026-62840
Microsoft Linux 3P Distros
Linux Kernel Elevation of Privilege Vulnerability
CVSS 3.1
7.0High
Official description
Time-of-check time-of-use (toctou) race condition in Linux Kernel allows an authorized attacker to elevate privileges locally.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.0High | 3.1 | CVEProject cvelistV5 (CNA) (microsoft) | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Microsoft | Linux 3P (Third Party) Distros | 1.0.0 ≤ v < 7.3 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62840 vendor-advisorypatch
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Details
- Published
- 2026-10-14
- Last updated
- 2026-10-31
- State
- Published
- Assigner (CNA)
- microsoft
Exploit prediction (EPSS)
0.2%
Probability of exploitation in 30 days
10.8%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition