Read the docs
TI-2025-34909 Aliases CVE-2025-55243GHSA-xrfp-hm62-qxmv

Microsoft OfficePlus Spoofing Vulnerability

Priority MEDIUM 41CWE-200Published · Updated

Key facts

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

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

Summary

Exposure of sensitive information to an unauthorized actor in Microsoft Office Plus allows an unauthorized attacker to perform spoofing over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01158 67th percentileScored 2026-11-07
Fix Fixed Microsoft OfficePLUS (Microsoft): 3.10.0.26585

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft OfficePLUS3.0.0.0 to before 3.10.0.265853.10.0.26585Patch availableCNA
  • Microsoft OfficePLUS VendorMicrosoft Affected 3.0.0.0 to before 3.10.0.26585 Fixed in 3.10.0.26585 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:officeplus:*:*:*:*:*:*:*:*before 3.10.0.26585VulnerableMicrosoft
  • cpe:2.3:a:microsoft:officeplus:*:*:*:*:*:*:*:* Versions before 3.10.0.26585 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft OfficePLUS (Microsoft) Fixed in 3.10.0.26585

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft OfficePLUSFixed 3.10.0.26585 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-55243
  2. 2026-10-03 Alias added: GHSA-xrfp-hm62-qxmv

References

Patch 1

  • TI-2024-25373 Microsoft OfficePlus Elevation of Privilege Vulnerability CVSS 3.1HIGH 7.8

Sources

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