What is the CVSS score of CVE-2025-66698?

CVE-2025-66698 has a CVSS 3.1 base score of 8.6 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N. EPSS exploitation probability: 0.2%.

Which versions of Veda are affected by CVE-2025-66698?

Organizations using Semantic machines face significant risk from CVE-2025-66698, a improper authentication vulnerability rated CVSS 8.6.

Is there a public PoC exploit available for CVE-2025-66698?

Yes, a public proof-of-concept exploit is available for CVE-2025-66698. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-66698?

Within 7 days: Identify all affected systems running Semantic machines and apply vendor patches promptly. Audit authentication configurations and rotate any potentially compromised credentials.

Veda CVE-2025-66698

HIGH

Improper Authentication (CWE-287)

2026-01-13 cve@mitre.org

Authentication Bypass Veda

8.6

CVSS 3.1 · Vendor: mitre

Severity by source

Vendor (mitre) PRIMARY

8.6 HIGH

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

Primary rating from Vendor (mitre) · only source for this CVE.

CVSS VectorVendor: mitre

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 05, 2026 - 20:30 vuln.today

Public exploit code

CVE Published

Jan 13, 2026 - 16:15 nvd

HIGH 8.6

DescriptionCVE.org

An issue in Semantic machines v5.4.8 allows attackers to bypass authentication via sending a crafted HTTP request to various API endpoints.

AnalysisAI

An issue in Semantic machines v5.4.8 allows attackers to bypass authentication via sending a crafted HTTP request to various API endpoints. [CVSS 8.6 HIGH]

Technical ContextAI

Classified as CWE-287 (Improper Authentication). Affects Veda. An issue in Semantic machines v5.4.8 allows attackers to bypass authentication via sending a crafted HTTP request to various API endpoints.