Quick answers
- Is CVE-2026-82122 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-82122 being exploited in the wild.
- How severe is CVE-2026-82122?
- Critical severity, with a CVSS score of 9.4, published 27 October 2026.
- Which products and versions are affected?
- Hitachi HiRDB Server Version 10 Windows 10-00 to 10-12 (before 10-12-01); Hitachi HiRDB Server Version 9 Windows 09-00 through 09-66-22; Hitachi HiRDB Server Version 9(32) Windows 09-02 through 09-66-22; Hitachi HiRDB Server with Additional Function Version 9 Windows 09-00 through 09-66-/V; and 1 more.
- Is there a fix for CVE-2026-82122?
- Yes: fixed in HiRDB Server Version 10: 10-12-01, 10-11-02, 10-08-05. Until then: This vulnerability only affects HiRDB on Windows systems where the remote shell facility has been explicitly enabled. Disable the remote shell facility by executing "pdntenv -ro off" until patches can be applied. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-82122 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-82122?
- Check whether you run Hitachi HiRDB Server Version 10, Hitachi HiRDB Server Version 9, Hitachi HiRDB Server Version 9(32) or one of the others listed 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: HiRDB Server Version 10: 10-12-01, 10-11-02, 10-08-05
This vulnerability only affects HiRDB on Windows systems where the remote shell facility has been explicitly enabled. Disable the remote shell facility by executing "pdntenv -ro off" until patches can be applied.
Technical details
A stack-based buffer overflow in HiRDB on Windows allows remote code execution when the remote shell facility is explicitly enabled. The vulnerability requires network access but no authentication or user interaction; an unauthenticated attacker can send a specially crafted request to trigger memory corruption and execute arbitrary code with the privileges of the HiRDB process.
Affected products
- Hitachi HiRDB Server Version 10 Windows 10-00 to 10-12 (before 10-12-01)
- Hitachi HiRDB Server Version 9 Windows 09-00 through 09-66-22
- Hitachi HiRDB Server with Additional Function Version 9 Windows 09-00 through 09-66-/V
- Hitachi HiRDB Server Version 9(32) Windows 09-02 through 09-66-22
- Hitachi HiRDB Server with Additional Function Version 9(32) Windows 09-00 through 09-66-/V
Timeline
- 2026-10-27: disclosed