Affects Hitachi JP1 Manager, a widely used enterprise job scheduler; stack overflow can enable remote/arbitrary code execution and disrupt operations.
CVE-2026-76936
Stack buffer overflow in Hitachi JP1 Manager enabling arbitrary code execution.
Is CVE-2026-76936 being exploited?
Not confirmed. CVE-2026-76936 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.
How severe is CVE-2026-76936?
CVE-2026-76936 is rated Critical with a CVSS score of 9.4. 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-2026-76936?
Yes. A fix has been recorded for CVE-2026-76936. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76936 affect?
CVE-2026-76936 affects Hitachi JP1/Automatic Job Management System 3 - Manager (>=10-00, <13-50-31). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76936?
Install update 13-50-31 or later; isolate Manager from untrusted networks.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution on JP1 Manager via crafted input, allowing full system compromise, service disruption, and data exposure.
Immediate action required
- affected>= 10-00 and < 13-50-31
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.