Type Vulnerability
Changes made to the security updates links and information.
Microsoft
Time-of-check time-of-use (toctou) race condition in .NET allows an authorized attacker to elevate privileges locally
CVE-2026-114155
What this means
This is rated high severity (7.5 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Time-of-check time-of-use (toctou) race condition in .NET allows an authorized attacker to elevate privileges locally.
Scoring and exploitation
7.5/ 10
CVSS 3.1 base scoreHigh
Exploitable only with local access and a low-privilege account, under specific conditions, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability, and it can reach beyond the vulnerable system.
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Exploitability
Longer bar: easier to attack
Attack vectorLocalAV:L
Attack complexityHighAC:H
Privileges requiredLowPR:L
User interactionRequiredUI:R
ScopeChangedS:C
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-367
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link