Type Vulnerability
Changes made to the security updates links and information.
Microsoft
Input Validation Flaw in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network
CVE-2026-114156
What this means
This is rated medium severity (6.5 out of 10). There is no confirmed exploitation of it yet.
Full vendor description
Improper input validation in ASP.NET Core allows an unauthorized attacker to bypass a security feature over a network.
Scoring and exploitation
6.5/ 10
CVSS 3.1 base scoreMedium
Exploitable over the network without any account, under specific conditions, and no one has to click or open anything. High impact on integrity; low on confidentiality.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityHighAC:H
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityLowC:L
IntegrityHighI:H
AvailabilityNoneA:N
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-41
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link