Security readout for executives and security teams
Plain-English summary
This vulnerability could let a logged-in attacker read sensitive information stored in cleartext in Azure Compute Gallery for Microsoft ACI Confidential Containers. The main business risk is confidentiality loss, not service outage or data tampering.
Executive priority
Treat this as a moderate confidentiality issue. Prioritize environments where confidential containers handle secrets, regulated data, or production workloads, especially if many users or service principals can access Azure Compute Gallery.
Technical view
CVE-2026-23655 is CWE-312 cleartext storage of sensitive information affecting Microsoft ACI Confidential Containers 1.0.0. CVSS 3.1 is 6.5: network reachable, low complexity, low privileges required, no user interaction, high confidentiality impact, no integrity or availability impact.
Likely exposure
Exposure appears limited to organizations using Microsoft ACI Confidential Containers version 1.0.0 with Azure Compute Gallery workflows. The attacker must be authorized, so identity permissions and gallery access boundaries matter.
Exploitation context
The source bundle does not report active exploitation, and the CVSS exploit maturity is unproven. Exploitation requires network access and low privileges, with no user interaction, making over-permissive cloud identities a practical risk factor.
Researcher notes
The public bundle names the weakness and affected version but provides limited technical detail. Do not assume broader Azure products are affected. Focus validation on ACI Confidential Containers 1.0.0, Azure Compute Gallery storage behavior, access control, and vendor remediation status.
Mitigation direction
- Review Microsoft’s advisory and apply the vendor-provided patch or remediation.
- Inventory ACI Confidential Containers 1.0.0 deployments tied to Azure Compute Gallery.
- Restrict Azure Compute Gallery access to least-privilege identities.
- Remove or rotate sensitive data that may have been stored in cleartext.
- Monitor Microsoft guidance for updated remediation details.
Validation and detection
- Confirm whether ACI Confidential Containers 1.0.0 is deployed.
- Identify Azure Compute Gallery resources used by affected container workflows.
- Review permissions for identities with gallery access.
- Check whether sensitive information exists in affected gallery artifacts.
- Verify Microsoft advisory remediation has been applied.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-312: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-23655 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C2.83.6microsoftVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Microsoft ACI Confidential Containers Information Disclosure VulnerabilityCVE reference, microsoft · vendor-advisory, patch
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Cleartext Storage of Sensitive Information
Cleartext Storage of Sensitive Information represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.