What is the CVSS score of CVE-2025-48992?

CVE-2025-48992 has a CVSS 3.1 base score of 4.8 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Group Office are affected by CVE-2025-48992?

Organizations using Group-Office should be aware of moderate risk from CVE-2025-48992, a cross-site scripting vulnerability rated CVSS 4.8.. A patch is available.

Is there a public PoC exploit available for CVE-2025-48992?

Yes, a public proof-of-concept exploit is available for CVE-2025-48992. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-48992?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Group Office CVE-2025-48992

EUVD-2025-18455 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-06-16 security-advisories@github.com

Microsoft XSS Group Office

4.8

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.8 MEDIUM

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 14, 2026 - 21:59 euvd

EUVD-2025-18455

Analysis Generated

Mar 14, 2026 - 21:59 vuln.today

Patch released

Mar 14, 2026 - 21:59 nvd

Patch available

PoC Detected

Sep 04, 2025 - 15:57 vuln.today

Public exploit code

CVE Published

Jun 16, 2025 - 23:15 nvd

MEDIUM 4.8

DescriptionGitHub Advisory

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.123 and 25.0.27, a stored and blind cross-site scripting (XSS) vulnerability exists in the Name Field of the user profile. A malicious attacker can change their name to a javascript payload, which is executed when a user adds the malicious user to their Synchronization > Address books. This issue has been patched in versions 6.8.123 and 25.0.27.

Analysis

Technical ContextAI

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

RemediationAI

A vendor patch is available — apply it immediately. Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.