What is CVE-2026-33697?

CVE-2026-33697 is a high-severity vulnerability in Ultravioletrs Cocos, classified under Key Exchange without Entity Authentication. CVSS score: 7.5/10. Published 2026-03-26.

How severe is CVE-2026-33697?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Ultravioletrs Cocos

CVE-2026-33697

Cocos AI is a confidential computing system for AI. The current implementation of attested TLS (aTLS) in CoCoS is vulnerable to a relay attack affecting all versions from v0.4.0 through v0.8.2. This vulnerability is present in both the AMD…

EPSS: 0.000 (0.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Ultravioletrs Cocos — versions >= 0.4.0, < 0.8.2

Weakness classification (CWE)

CWE-322 — Key Exchange without Entity Authentication
CWE-346 — Origin Validation Error

References

https://github.com/ultravioletrs/cocos/security/advisories/GHSA-vfgg-mvxx-mgg7 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-33697?: CVE-2026-33697 is a high-severity vulnerability in Ultravioletrs Cocos, classified under Key Exchange without Entity Authentication. CVSS score: 7.5/10. Published 2026-03-26.
How severe is CVE-2026-33697?: High severity. CVSS v3 base score is 7.5 out of 10.