What is CVE-2026-86383?

CVE-2026-86383 is a medium-severity vulnerability in Dell Powerprotect Data Domain, classified under Path Traversal. CVSS score: 6.8/10. Published 2026-10-28.

How severe is CVE-2026-86383?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Path Traversal in Dell Powerprotect Data Domain

CVE-2026-86383

Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (49.6th percentile), scored 2026-10-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Dell Powerprotect Data Domain

Weakness classification (CWE)

CWE-22 — Path Traversal

References

www.dell.com/support/kbdoc/en-us/000515178/dsa-2026-416-security-update-for-del… (vendor-advisory)

Frequently asked questions

What is CVE-2026-86383?: CVE-2026-86383 is a medium-severity vulnerability in Dell Powerprotect Data Domain, classified under Path Traversal. CVSS score: 6.8/10. Published 2026-10-28.
How severe is CVE-2026-86383?: Medium severity. CVSS v3 base score is 6.8 out of 10.