Quick answers
- Is CVE-2026-91758 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91758 being exploited in the wild.
- How severe is CVE-2026-91758?
- 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-2026-91758?
- 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-2026-91758 attacked?
- It is attacked with local access.
- Am I affected by CVE-2026-91758?
- 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
CVE-2026-91758 is an out-of-bounds read and write vulnerability in Hitachi Dynamic Link Manager for Linux, affecting versions 7.5.0-00 through 9.0.3-01. The vulnerability requires local access and low privileges (PR:L) with no user interaction required. Exploitation allows an attacker to read and write memory outside intended bounds, compromising confidentiality, integrity, and availability.
Affected products
- Hitachi Dynamic Link Manager for Linux 7.5.0-00 to 9.0.3-01
Timeline
- 2026-11-10: disclosed