Type Vulnerability
A race condition in Core could allow an authorised attacker to escalate privileges on a local system.
Microsoft
Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core allows an authorized attacker to elevate privileges locally
CVE-2026-114157
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
Concurrent execution using shared resource with improper synchronization ('race condition') in ASP.NET Core 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, and no one has to click or open anything. High impact on confidentiality and integrity, and it can reach beyond the vulnerable system.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Exploitability
Longer bar: easier to attack
Attack vectorLocalAV:L
Attack complexityHighAC:H
Privileges requiredLowPR:L
User interactionNoneUI:N
ScopeChangedS:C
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityNoneA:N
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-362
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link