Security readout for executives and security teams
Plain-English summary
A flaw in Azure Logic Apps may let an already authorized attacker gain broader privileges remotely. Successful exploitation could expose or alter sensitive data and disrupt services beyond the attacker’s original permissions. The supplied record rates it critical, but does not identify affected versions or deployment configurations.
Executive priority
Treat this as an immediate review priority because compromise could affect data confidentiality, integrity, and availability across security boundaries. Assign ownership to cloud security and Azure operations, verify Microsoft’s remediation guidance, and assess all Logic Apps environments without assuming automatic service remediation.
Technical view
CVE-2026-42823 is an improper access-control vulnerability classified as CWE-284. Its CVSS 3.1 score is 9.9: network-accessible, low complexity, low privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact. The supplied sources do not describe the vulnerable component or exploitation mechanics.
Likely exposure
Organizations using Azure Logic Apps may be exposed, particularly where untrusted or compromised identities have authorized access. Exact exposure cannot be determined from the bundle because affected versions, service tiers, regions, configurations, and prerequisites are unspecified.
Exploitation context
The CVSS vector indicates exploitation requires an authorized, low-privileged attacker with network access. The bundle marks the CVE as absent from KEV and the vector reports exploit maturity as unproven. No supplied source establishes active exploitation or public exploit availability.
Researcher notes
The source bundle provides severity, CWE, and CVSS characteristics but no affected-version range, vulnerable component, technical root cause, or concrete fix details. The Microsoft reference is tagged as a patch source, yet the supplied content does not identify a patch or required customer action. Avoid inferring tenant-wide exploitability without vendor clarification.
Mitigation direction
- Review the Microsoft advisory and apply its specified remediation or service-side protection promptly.
- Inventory Azure Logic Apps deployments, subscriptions, identities, connectors, and privileged role assignments.
- Reduce unnecessary Logic Apps permissions and revoke stale users, service principals, and access tokens.
- Increase monitoring for unexpected workflow, connector, role, and resource changes.
Validation and detection
- Confirm each Logic Apps environment matches Microsoft’s affected-product and remediation guidance.
- Verify remediation status across every relevant Azure subscription, region, and deployment tier.
- Review audit and activity logs for unexpected privilege, workflow, connector, or access-policy changes.
- Confirm Logic Apps identities retain only permissions required for their intended workflows.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-42823 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
- Critical
- CVSS
- 9.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/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:C/C:H/I:H/A:H/E:U/RL:O/RC:C3.16microsoftVulnerability scoring details
Base CVSS 3.1 score
9.9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/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
- Azure Logic Apps Elevation of Privilege 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.
Improper Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.