CVE-2026-54121

Improper authorization in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges over a network.

CVSS v3.1

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

EPSS

1.79% chance of exploitation in the next 30 days, 77th percentile

Published

2026-07-14

Updated

2026-08-31

Proof-of-concept exploits (10)

• aniqfakhrul/CVE-2026-54121325★ · 2026-07-28
• marcgoam/CVE-2026-54121-CertiGhost10★ · 2026-07-27
• nafiez/Metasploit-CVE-2026-54121-Certighost4★ · 2026-07-31
• 0xBlackash/CVE-2026-541212★ · 2026-07-25
• HORKimhab/CVE-2026-541210★ · 2026-07-25
• ChPratik/CVE-2026-541211★ · 2026-07-28
• GlendonNotGlen/certighost-cve-2026-54121-slides0★ · 2026-07-26
• KrakenEU/CVE-2026-54121-CertiGhost1★ · 2026-07-31
• sam00/POC-CVE-2026-54121-Certighost0★ · 2026-08-06
• tc4dy/CVE-2026-54121-PoC-Exploit

References

• CVE Record
• NVD entry

Related

• CVE-2022-22954
• CVE-2018-16382
• CVE-2018-16517
• CVE-2018-19150
• CVE-2019-19197
• CVE-2019-19820