CVE-2026-44632
Authenticated code injection in Yamcs enables remote OS command execution.
Is CVE-2026-44632 being exploited?
Not confirmed. CVE-2026-44632 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 1.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-44632?
CVE-2026-44632 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-44632?
Yes. A fix has been recorded for CVE-2026-44632. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-44632 affect?
CVE-2026-44632 affects Yamcs server versions prior to 5.12.7, org.yamcs.algorithms.JavaExprAlgorithmExecutionFactory. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-44632?
Upgrade to Yamcs 5.12.7 or 5.13.0; disable algorithm editing and restrict ChangeMissionDatabase privilege.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
An authenticated user with ChangeMissionDatabase can inject Java (via Janino) into algorithms to achieve remote code execution on the Yamcs host.
Immediate action required
- affected< 5.12.7
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.