VDB-199368 · CVE-2022-26923 · GCVE-0-2022-26923

Microsoft Windows up to Server 2022 Active Directory Domain Services certificate validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.3	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in Microsoft Windows. This issue affects some unknown processing of the component Active Directory Domain Services. The manipulation results in an unknown weakness. This vulnerability was named CVE-2022-26923. The attack may be performed from remote. In addition, an exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as very critical has been found in Microsoft Windows (Operating System). Affected is an unknown functionality of the component Active Directory Domain Services. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Active Directory Domain Services Elevation of Privilege Vulnerability

The weakness was presented 05/10/2022 as confirmed security guidance (Website). The advisory is shared for download at portal.msrc.microsoft.com. This vulnerability is traded as CVE-2022-26923. Technical details are unknown but a public exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/30/2025). The MITRE ATT&CK project declares the attack technique as T1587.003.

A public exploit has been developed by Oliver Lyak (ly4k_) in Python and been published before and not just after the advisory. The exploit is shared for download at research.ifcr.dk. It is declared as attacked. As 0-day the estimated underground price was around $100k and more. This issue was added on 08/18/2022 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/08/2022:

Apply updates per vendor instructions.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Operating System

Vendor

Microsoft

Name

Windows

Version

License

commercial

Website

Vendor: https://www.microsoft.com/
Product: https://www.microsoft.com/en-us/windows

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.3

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Microsoft): 8.8
Vendor Vector (Microsoft): 🔍

CNA Base Score: 8.8
CNA Vector (Microsoft): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Author: Oliver Lyak (ly4k_)
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

03/11/2022 🔍
05/10/2022 +59 days 🔍
05/10/2022 +0 days 🔍
05/10/2022 +0 days 🔍
05/11/2022 +0 days 🔍
10/30/2025 +1268 days 🔍

Sourcesinfo

Vendor: microsoft.com
Product: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed

CVE: CVE-2022-26923 (🔍)
GCVE (CVE): GCVE-0-2022-26923
GCVE (VulDB): GCVE-100-199368
scip Labs: https://www.scip.ch/en/?labs.20161215

Entryinfo

Created: 05/11/2022 06:02
Updated: 10/30/2025 22:55
Changes: 05/11/2022 06:02 (35), 05/11/2022 06:05 (19), 05/12/2022 15:01 (6), 05/12/2022 15:02 (2), 05/12/2022 16:38 (2), 05/12/2022 16:47 (10), 04/27/2024 11:58 (29), 06/28/2024 23:51 (8), 09/23/2024 23:45 (2), 01/03/2025 00:03 (1), 10/30/2025 22:55 (1)
Complete: 🔍
Committer: misc
Cache ID: 216::103