RCE in Yamcs
CVE-2026-46621
Yamcs is a mission control framework. Prior to 5.12.7, the Yamcs script evaluation engine for Python algorithms dynamically compiled and evaluated user-controlled algorithm text using Jython through the JSR-223 ScriptEngine API without enf…
Vulnerability class: RCE (Remote Code Execution)
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Yamcs — versions < 5.12.7
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-46621?
- CVE-2026-46621 is a critical-severity vulnerability in Yamcs, classified under Code Injection. CVSS score: 9.1/10. Published 2026-07-16.
- How severe is CVE-2026-46621?
- Critical severity. CVSS v3 base score is 9.1 out of 10.