CVE-2026-86378 Dell PowerProtect Data Domain - Buffer Overflow

Dell PowerProtect Data Domain 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, and LTS2026 8.6.1.0 through 8.6.1.20 contain a stack-based buffer overflow caused by improper bounds checking, letting low privileged remote attackers gain unauthorized access, exploit requires remote access with low privileges.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-121

Vendor fix

Update to the latest available version beyond 8.8 or respective LTS versions.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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