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UK Cyber Defence
VulnerabilityAwaiting Analysis

CVE-2026-70186

Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.

HIGH 7.5EPSS 0.96%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Deadlock in ASP.NET Core allows an unauthorized attacker to deny service over a network.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.96% probability · 61th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-833
Source
secure@microsoft.com
EPSS trend
0%3%5%14 October 2026: 0.85%26 October 2026: 0.96%14 October 202626 October 2026

EPSS moved from 0.8% on 14 October 2026 to 1.0% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.