Security readout for executives and security teams
Plain-English summary
Microsoft Power Apps Desktop Client 1.0.0 contains an authorization flaw that could let an authenticated attacker run code after user interaction. Successful exploitation could expose sensitive information, alter systems, or disrupt affected endpoints. The supplied evidence rates it high severity, but does not establish active exploitation.
Executive priority
Prioritize remediation in the current security-update cycle, accelerating systems exposed to untrusted authenticated users. The potential impact is complete endpoint compromise, although user interaction is required and active exploitation is not established. Track deployment completion and unresolved exceptions at management level.
Technical view
CVE-2026-20960 is a CWE-285 improper-authorization vulnerability reachable over a network. CVSS 3.1 is 8.0: low attack complexity, low privileges required, and user interaction required. Successful exploitation may compromise confidentiality, integrity, and availability without crossing a security boundary.
Likely exposure
Exposure is limited to environments running Microsoft Power Apps Desktop Client version 1.0.0, as identified by the supplied record. Risk is higher where the client is broadly deployed or accessible to untrusted authenticated users. No other affected versions or products are established by the sources.
Exploitation context
The attacker must be authorized and requires user interaction, reducing the likelihood of fully unauthenticated or automatic compromise. However, network reachability and low attack complexity make exposed installations important to address. The CVE is not listed as KEV in the supplied bundle, and no cited evidence confirms active exploitation.
Researcher notes
The supplied CVSS vector indicates AV:N, AC:L, PR:L, UI:R, and high confidentiality, integrity, and availability impact. Public details in the bundle are sparse: no attack mechanism, indicators, exploitation observations, or precise remediation version is provided. Validate technical details directly against the Microsoft advisory without assuming broader product exposure.
Mitigation direction
- Inventory endpoints running Microsoft Power Apps Desktop Client version 1.0.0.
- Review the Microsoft advisory for the applicable security update and deployment requirements.
- Apply the vendor-provided update using normal change-control and endpoint-management processes.
- Restrict untrusted authenticated access until remediation is verified.
Validation and detection
- Confirm installed Power Apps Desktop Client versions across managed endpoints.
- Verify the Microsoft-recommended update is installed on every affected endpoint.
- Review endpoint telemetry for suspicious activity involving the affected client.
- Re-scan patched systems and document any exceptions or unreachable devices.
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
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ATT&CK lookup starting points
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CWE-285: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-20960 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C2.15.9microsoftVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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
- PowerApps Desktop Client Remote Code Execution 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 Authorization
Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.