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Microsoft

Missing release of memory after effective lifetime in ASP.NET Core allows an unauthorized attacker to deny service over a network

CVE-2026-114147

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

Missing release of memory after effective lifetime in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Scoring and exploitation

7.5/ 10
CVSS 3.1 base scoreHigh

Exploitable over the network without any account, and no one has to click or open anything. High impact on availability.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability

Longer bar: easier to attack

Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeUnchangedS:U

Impact

Longer bar: more harm

ConfidentialityNoneC:N
IntegrityNoneI:N
AvailabilityHighA:H
Not reported
Exploited in the wild
Not confirmed in the
Not reported

Weaknesses

CWE-401

References

1 link from the CVE record, grouped by site.