Quick answers
- Is CVE-2026-86398 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-86398 being exploited in the wild.
- How severe is CVE-2026-86398?
- High severity, with a CVSS score of 8.8, published 28 October 2026.
- Which products and versions are affected?
- Dell PowerProtect Data Domain Feature Release 7.7.1.0 through 8.8; LTS2024 7.13.1.0 through 7.13.1.80; LTS2025 8.3.1.0 through 8.3.1.40; LTS2026 8.6.1.0 through 8.6.1.20.
- Is there a fix for CVE-2026-86398?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-86398 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-86398?
- Check whether you run Dell PowerProtect Data Domain 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.
Technical details
The vulnerability is a path traversal (CWE-22) in Dell PowerProtect Data Domain that allows a low-privileged remote attacker to access files outside intended directories through improper pathname validation. An attacker can exploit this to enumerate and access the filesystem, potentially leading to disclosure of sensitive information or system compromise. A fix is available from Dell.
Affected products
- Dell PowerProtect Data Domain Feature Release 7.7.1.0 through 8.8; LTS2024 7.13.1.0 through 7.13.1.80; LTS2025 8.3.1.0 through 8.3.1.40; LTS2026 8.6.1.0 through 8.6.1.20
Timeline
- 2026-10-28: disclosed