What is the CVSS score of CVE-2025-39489?

CVE-2025-39489 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

How to fix or mitigate CVE-2025-39489?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

CVE-2025-39489

CRITICAL

Incorrect Privilege Assignment (CWE-266)

2025-05-23 audit@patchstack.com

Privilege Escalation

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Re-analysis Queued

Apr 23, 2026 - 15:42 vuln.today

cvss_changed

Analysis Generated

Mar 28, 2026 - 18:43 vuln.today

CVE Published

May 23, 2025 - 13:15 nvd

CRITICAL 9.8

DescriptionCVE.org

Incorrect Privilege Assignment vulnerability in pebas CouponXL allows Privilege Escalation. This issue affects CouponXL: from n/a through 4.5.0.

AnalysisAI

Incorrect Privilege Assignment vulnerability in pebas CouponXL allows Privilege Escalation.5.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-266. Incorrect Privilege Assignment vulnerability in pebas CouponXL allows Privilege Escalation.5.0. Version information: through 4.5.0..

Affected ProductsAI

See vendor advisory for affected versions.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.