What is the CVSS score of CVE-2025-6703?

CVE-2025-6703 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of Neqo are affected by CVE-2025-6703?

CVE-2025-6703 presents notable security risk, a input validation vulnerability rated CVSS 6.5. Exploitation could compromise the security of affected deployments.

How to fix or mitigate CVE-2025-6703?

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

Neqo CVE-2025-6703

EUVD-2025-28762 MEDIUM

Improper Input Validation (CWE-20)

2025-06-26 security@mozilla.org

Denial Of Service Red Hat Mozilla Neqo Suse

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

SUSE

MEDIUM

qualitative

Red Hat

3.5 LOW

qualitative

Primary rating from NVD.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 23:54 euvd

EUVD-2025-28762

Analysis Generated

Mar 15, 2026 - 23:54 vuln.today

CVE Published

Jun 26, 2025 - 10:15 nvd

MEDIUM 6.5

DescriptionCVE.org

Improper Input Validation vulnerability in Mozilla neqo leads to an unexploitable crash..This issue affects neqo: from 0.4.24 through 0.13.2.

Analysis

Improper Input Validation vulnerability in Mozilla neqo leads to an unexploitable crash..This issue affects neqo: from 0.4.24 through 0.13.2.

Technical ContextAI

A denial of service vulnerability allows an attacker to disrupt the normal functioning of a system, making it unavailable to legitimate users. This vulnerability is classified as Improper Input Validation (CWE-20).