CVE-2026-56086: Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2026 release version 8.6.1.0 through 8.6.1.10,

Q: How do I fix CVE-2026-56086?

data domain operating system: upgrade to 7.13.1.80, 8.3.1.40, 8.6.1.20. Exact commands for each OS are on this page.

Q: Is CVE-2026-56086 being exploited?

CVE-2026-56086 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-56086 affect?

CVE-2026-56086 affects data domain operating system. Severity is high (CVSS 8.8). Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70 contain an Incorrect Author

This month

HIGH 8.8UPGRADE

CVE-2026-56086 is a high-severity flaw (CVSS 8.8) affecting data domain operating system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70 contain an Incorrect Authorization vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to unauthorized access.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-07-08
Last modified	2026-10-25

Publisher (CNA): Dell · Vendor: dell

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-08 14:17 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

dell data domain operating system UPGRADE

Affected: >= 7.7.1.0 and < 7.13.1.80 · >= 7.14.0.0 and < 8.3.1.40 · >= 8.4.0.0 and < 8.6.1.20

Fixed in: 7.13.1.80, 8.3.1.40, 8.6.1.20

Safe to downgrade to: a release before 7.7.1.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-56086?

data domain operating system: upgrade to 7.13.1.80, 8.3.1.40, 8.6.1.20. Exact commands for each OS are on this page.

Is CVE-2026-56086 being exploited?

CVE-2026-56086 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-56086 affect?

CVE-2026-56086 affects data domain operating system. Severity is high (CVSS 8.8). Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70 contain an Incorrect Author

How urgent is CVE-2026-56086?

Priority 40/100. High severity

Software pages

Dell vulnerabilities

Related CVEs

CVE-2026-53481 CRITICAL 9.8 UPGRADE Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10,
CVE-2026-53483 CRITICAL 9.8 UPGRADE Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10,
CVE-2026-53479 HIGH 7.2 UPGRADE Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10,
CVE-2026-53482 HIGH 7.5 UPGRADE Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10,
CVE-2026-41122 HIGH 7.1 UPGRADE Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10,

References

← Back to latest CVEs