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TI-2026-42289 Aliases CVE-2026-59118GHSA-jc2g-2frr-2pxq

Copilot Cowork Elevation of Privilege Vulnerability

Priority MEDIUM 43CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

Improper authorization in Copilot Cowork allows an unauthorized attacker to elevate privileges over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00716 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftCopilot Cowork-—No fix listedCNA
  • Copilot Cowork VendorMicrosoft Affected - Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:power_apps:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:a:microsoft:power_apps:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
—

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59118
  2. 2026-10-03 Alias added: GHSA-jc2g-2frr-2pxq

References

Patch 1

  • TI-2025-30219 Microsoft Power Apps Information Disclosure Vulnerability CVSS 3.1CRITICAL 9.1
  • TI-2026-21140 Microsoft Power Apps Desktop Client Spoofing Vulnerability CVSS 3.1CRITICAL 9.0
  • TI-2026-24708 Microsoft Power Apps Remote Code Execution Vulnerability CVSS 3.1HIGH 8.0
  • TI-2026-16980 PowerApps Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.0
  • TI-2023-15356 Microsoft Power Apps (online) Spoofing Vulnerability CVSS 3.1MEDIUM 5.4
  • TI-2023-15330 Microsoft Power Apps Spoofing Vulnerability CVSS 3.1LOW 3.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences