Type Vulnerability
Updated the Security Updates table to add KB article links for.NET 11.0.
Microsoft
A denial of service vulnerability exists when Microsoft Common Object Runtime Library improperly handles web requests
CVE-2026-70162
What this means
This is rated medium severity (5.9 out of 10). There is no confirmed exploitation of it yet.
Full vendor description
A denial of service vulnerability exists when Microsoft Common Object Runtime Library improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET web application. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET application. The update addresses the vulnerability by correcting how the .NET web application handles web requests.
Scoring and exploitation
5.9/ 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 availability.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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
ConfidentialityNoneC:N
IntegrityNoneI:N
AvailabilityHighA:H
- ~0.9% estimated chance of attack in 30 daysModel estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-405
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link