What is CVE-2025-66698?

CVE-2025-66698 is a high-severity vulnerability in Semantic-machines Veda, classified under Improper Authentication. CVSS score: 8.6/10. Published 2026-01-13.

How severe is CVE-2025-66698?

High severity. CVSS v3 base score is 8.6 out of 10.

Is CVE-2025-66698 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Semantic-machines Veda

CVE-2025-66698

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

Vulnerability class: Broken Authentication

EPSS: 0.005 (39.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.

Affected products

Semantic-machines Veda — versions 5.4.8
N/a — versions n/a

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

Perunchess/CVE-2025-66698

References

cve@mitre.org (Broken Link)
cve@mitre.org (Not Applicable)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-66698?: CVE-2025-66698 is a high-severity vulnerability in Semantic-machines Veda, classified under Improper Authentication. CVSS score: 8.6/10. Published 2026-01-13.
How severe is CVE-2025-66698?: High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2025-66698 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.