What is the CVSS score of EUVD-2025-200129?

EUVD-2025-200129 has a CVSS 3.0 base score of 5.4 (Medium). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Revive Adserver are affected by EUVD-2025-200129?

CVE-2025-55129 presents moderate security risk rated CVSS 5.4. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available.

Is there a public PoC exploit available for EUVD-2025-200129?

Yes, a public proof-of-concept exploit is available for EUVD-2025-200129. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate EUVD-2025-200129?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Revive Adserver EUVD-2025-200129

| CVE-2025-55129 MEDIUM

Improper Handling of Unicode Encoding (CWE-176)

2025-12-02 support@hackerone.com

Information Disclosure Revive Adserver

5.4

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

5.4 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 14:04 euvd

EUVD-2025-200129

Analysis Generated

Mar 15, 2026 - 14:04 vuln.today

PoC Detected

Dec 30, 2025 - 14:31 vuln.today

Public exploit code

CVE Published

Dec 02, 2025 - 02:15 nvd

MEDIUM 5.4

DescriptionCVE.org

HackerOne community member Kassem S.(kassem_s94) has reported that username handling in Revive Adserver was still vulnerable to impersonation attacks after the fix for CVE-2025-52672, via several alternate techniques. Homoglyphs based impersonation has been independently reported by other HackerOne users, such as itz_hari_ and khoof.

Analysis

Technical ContextAI

This vulnerability is classified as Improper Handling of Unicode Encoding (CWE-176).

RemediationAI

Monitor vendor advisories for patches. Apply mitigations such as network segmentation, access restrictions, and monitoring.

EUVD-2025-200129 vulnerability details – vuln.today

Back