Security readout for executives and security teams
Plain-English summary
Azure Logic Apps has a path-traversal flaw that could let an unauthenticated network attacker gain higher privileges without user interaction. The published scoring indicates potentially serious data exposure and limited data modification, but no availability impact. Exact affected versions are not provided in the source bundle.
Executive priority
Treat this as a high-priority exposure assessment. Quickly identify Logic Apps handling sensitive data or privileged integrations, confirm whether Microsoft’s remediation applies, and track completion. Escalate urgency if Microsoft later reports exploitation or broader affected scope.
Technical view
CVE-2026-21227 is a CWE-22 path-traversal vulnerability in Azure Logic Apps. It is remotely reachable, requires low attack complexity, no privileges, and no user interaction. The CVSS 3.1 score is 8.2, with high confidentiality impact, low integrity impact, unchanged scope, and no availability impact.
Likely exposure
Organizations using Azure Logic Apps may be exposed, particularly where relevant service functionality is network-accessible. The supplied affected-version value is unspecified, so exposure cannot be determined from version data alone. Confirm applicability through Microsoft’s advisory and the organization’s Azure service inventory.
Exploitation context
The source bundle does not establish active exploitation, and the CVE is not listed as a CISA KEV entry. The CVSS exploit-maturity value is unproven. Nevertheless, unauthenticated network reachability and low attack complexity make timely assessment important.
Researcher notes
The vector is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C. Public details supplied here do not identify vulnerable versions, affected components, attack prerequisites beyond the vector, or technical remediation mechanics. Avoid inferring tenant-wide impact or exploit availability without additional vendor evidence.
Mitigation direction
- Review Microsoft’s advisory for current affected-service details and remediation instructions.
- Apply Microsoft’s documented update or service remediation after confirming applicability.
- Inventory Azure Logic Apps deployments and prioritize externally reachable or sensitive workflows.
- Monitor the Microsoft advisory and CVE records for revised scope or exploitation information.
Validation and detection
- Identify all Azure subscriptions and environments using Azure Logic Apps.
- Compare each deployment’s status and configuration with Microsoft’s current advisory guidance.
- Confirm Microsoft’s recommended remediation has been applied wherever applicable.
- Review relevant security telemetry for unexplained unauthorized access or privilege changes.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-21227 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
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C3.94.2microsoftVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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
- 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 Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.