JP1/Automatic Job Management System 3 - Manager: Authentication Bypass by Spoofing
CVE-2026-76938 is a critical-severity authentication bypass by spoofing vulnerability in JP1/Automatic Job Management System 3 - Manager from Hitachi, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 13-50-31 as the first without the flaw, so updating JP1/Automatic Job Management System 3 - Manager to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.64% chance of exploitation within 30 days, higher than 51% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update JP1/Automatic Job Management System 3 - Manager to 13-50-31 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Hitachi | JP1/Automatic Job Management System 3 - Manager | 10-00 up to, but not including, 13-50-31 | 13-50-31 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (hitachi.co.jp).
Official description
Authentication Bypass Vulnerability in JP1/Automatic Job Management System 3. This issue affects JP1/Automatic Job Management System 3 - Manager: from 10-00 before 13-50-31.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
More Authentication Bypass by Spoofing vulnerabilities (CWE-290)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in JP1/Automatic Job Management System 3 - Manager
- 9.4 Critical severity
- 9.4 Critical severity
- 9.4 Critical severity
- 9.8 Critical severity
- 9.4 Critical severity
- 9.4 Critical severity
Recent Authentication Bypass by Spoofing vulnerabilities
- 7.5 High severity
- 9.8 Critical severity
- 7.8 High severity
- 9.9 Critical severity
- 8.8 High severity
- 9.8 Critical severity
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