SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2022-34689

Windows CryptoAPI Spoofing Vulnerability

HIGH 7.5EPSS 38.1%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 38.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Windows CryptoAPI Spoofing Vulnerability

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
38.14% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-290
Affected
microsoft/windows 10 · microsoft/windows 11 · microsoft/windows 7 · microsoft/windows 8.1 · microsoft/windows rt 8.1 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016 · microsoft/windows server 2019 · microsoft/windows server 2022
Source
secure@microsoft.com
EPSS trend
0%20%40%3 November 2026: 38.14%3 November 20263 November 2026

EPSS 38.1% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

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