Type Vulnerability
Windows Active Directory Certificate Services has a security feature bypass vulnerability due to improper certificate validation, allowing an authorised attacker to bypass a security feature over a…
Windows Active Directory Certificate Services Security Feature Bypass
CVE-2026-105590
What this means
This is rated medium severity (5.3 out of 10). There is no confirmed exploitation of it yet.
Full vendor description
Improper certificate validation in Windows Active Directory Certificate Services allows an authorized attacker to bypass a security feature over a network.
Scoring and exploitation
5.3/ 10
CVSS 3.1 base scoreMedium
Exploitable over the network with a low-privilege account, under specific conditions, and no one has to click or open anything. High impact on integrity.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityHighAC:H
Privileges requiredLowPR:L
User interactionNoneUI:N
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityNoneC:N
IntegrityHighI:H
AvailabilityNoneA:N
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-295
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link