CVE-2026-77503
What it is
Out-of-bounds read in Windows NTFS allows an unauthorized attacker to elevate privileges locally.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-125 · Out-of-bounds read
- Record status
- Analyzed
Affected
- Microsoft Windows 10 1607 < 10.0.14393.9512
- Microsoft Windows 10 1809 < 10.0.17763.9245
- Microsoft Windows 10 21h2 < 10.0.19044.7725
- Microsoft Windows 10 22h2 < 10.0.19045.7725
- Microsoft Windows 11 23h2 < 10.0.22631.7582
- Microsoft Windows 11 24h2 < 10.0.26100.9445
- Microsoft Windows 11 25h2 < 10.0.26200.9445
- Microsoft Windows 11 26h1 < 10.0.28000.2954
Attack profile CVSS 3.1 · 8.4
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
