What is the CVSS score of CVE-2025-6646?

CVE-2025-6646 has a CVSS 3.0 base score of 3.3 (Low). CVSS vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2025-6646?

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

CVE-2025-6646

EUVD-2025-19148 LOW

Use After Free (CWE-416)

2025-06-25 zdi-disclosures@trendmicro.com

RCE Use After Free Memory Corruption Information Disclosure

3.3

CVSS 3.0 · NVD

Severity by source

NVD PRIMARY

3.3 LOW

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 23:19 euvd

EUVD-2025-19148

Analysis Generated

Mar 15, 2026 - 23:19 vuln.today

CVE Published

Jun 25, 2025 - 22:15 nvd

LOW 3.3

DescriptionCVE.org

PDF-XChange Editor U3D File Parsing Use-After-Free Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26643.

Analysis

Technical ContextAI

A use-after-free vulnerability occurs when a program continues to use a pointer after the referenced memory has been freed, leading to undefined behavior. This vulnerability is classified as Use After Free (CWE-416).