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TI-2026-55346 Aliases CVE-2026-80077GHSA-548x-6463-hm3w

Remote Desktop Client Remote Code Execution Vulnerability

Priority MEDIUM 42CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

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

Summary

Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00819 57th percentileScored 2026-11-07
Fix Fixed Remote Desktop client for Windows Desktop (Microsoft): 1.2.7279.0

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
MicrosoftRemote Desktop client for Windows Desktop1.2.0.0 to before 1.2.7279.01.2.7279.0Patch availableCNA
  • Remote Desktop client for Windows Desktop VendorMicrosoft Affected 1.2.0.0 to before 1.2.7279.0 Fixed in 1.2.7279.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:remote_desktop_client:*:*:*:*:*:windows:*:*before 1.2.7279VulnerableMicrosoft
  • cpe:2.3:a:microsoft:remote_desktop_client:*:*:*:*:*:windows:*:* Versions before 1.2.7279 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Remote Desktop client for Windows Desktop (Microsoft) Fixed in 1.2.7279.0

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely
ProductStatusPlan or fix
Remote Desktop client for Windows DesktopFixed 1.2.7279.0 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-80077
  2. 2026-10-03 Alias added: GHSA-548x-6463-hm3w

References

Patch 1

  • TI-2019-00638 Path traversal in Microsoft Multiple CVSS 3.1HIGH 8.0
  • TI-2022-06374 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-13557 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2025-19580 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-01386 Windows Remote Desktop Security Feature Bypass Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-31167 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
See all 29 →

Sources

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