Quick answers
- Is CVE-2026-91759 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91759 being exploited in the wild.
- How severe is CVE-2026-91759?
- High severity, with a CVSS score of 7.8, published 10 November 2026.
- Which products and versions are affected?
- Hitachi Dynamic Link Manager for Linux 7.5.0-00 to 9.0.3-01.
- Is there a fix for CVE-2026-91759?
- Yes: fixed in 9.0.5-00. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-91759 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-91759?
- Check whether you run Hitachi Dynamic Link Manager for Linux at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 9.0.5-00
Technical details
An out-of-bounds write vulnerability in Hitachi Dynamic Link Manager for Linux (CVE-2026-91759) allows local privileged users to write data outside allocated memory boundaries. The vulnerability requires local access and low-level user privileges (no root required), and can result in memory corruption, code execution, information disclosure, and denial of service. A patch is available in version 9.0.5-00.
Affected products
- Hitachi Dynamic Link Manager for Linux 7.5.0-00 to 9.0.3-01
Timeline
- 2026-11-10: disclosed