Microsoft ACI Confidential Containers permissive regular expression

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
6.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Microsoft ACI Confidential Containers. The impacted element is an unknown function. The manipulation results in permissive regular expression. This vulnerability is identified as CVE-2026-23651. The attack is only possible with local access. There is not any exploit available. This product is a managed service. This means that users are not able to maintain vulnerability countermeasures themselves.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft ACI Confidential Containers (version unknown). Affected is an unknown function. The manipulation with an unknown input leads to a permissive regular expression vulnerability. CWE is classifying the issue as CWE-625. The product uses a regular expression that does not sufficiently restrict the set of allowed values. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Permissive regular expression in Azure Compute Gallery allows an authorized attacker to elevate privileges locally.

The advisory is shared for download at msrc.microsoft.com. This vulnerability is traded as CVE-2026-23651 since 01/14/2026. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/10/2026).

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0616). Once again VulDB remains the best source for vulnerability data.

Affected

  • Microsoft Azure

Productinfo

Type

Vendor

Name

License

Managed Service

  • yes

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.7
CNA Vector (microsoft): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Permissive regular expression
CWE: CWE-625 / CWE-185 / CWE-697
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/14/2026 CVE reserved
03/06/2026 +51 days Advisory disclosed
03/06/2026 +0 days VulDB entry created
03/10/2026 +4 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-23651 (🔒)
GCVE (CVE): GCVE-0-2026-23651
GCVE (VulDB): GCVE-100-349356
CERT Bund: WID-SEC-2026-0616 - Microsoft Azure (ACI Confidential Containers): Mehrere Schwachstellen

Entryinfo

Created: 03/06/2026 07:37
Updated: 03/10/2026 16:07
Changes: 03/06/2026 07:37 (61), 03/09/2026 04:05 (7), 03/10/2026 16:07 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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