How severe is CVE-2025-43727?

CVE-2025-43727 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-43727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43727?

CVE-2025-43727 affects Dell Data Domain Operating System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43727?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-43727 have an EU (EUVD) identifier?

Yes. CVE-2025-43727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31891.

When was CVE-2025-43727 published?

CVE-2025-43727 was published on 2025-10-07 and last updated on 2026-06-17.

CVE-2025-43727

CVE-2025-43727 is a high-severity vulnerability in Dell Data Domain Operating System with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-303.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31891
Weakness: CWE-303
Affected product: Dell Data Domain Operating System
Published: 2025-10-07
Last modified: 2026-06-17

Description

Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.1.0.10, LTS2024 release Versions 7.13.1.0 through 7.13.1.25, LTS 2023 release versions 7.10.1.0 through 7.10.1.50, contain an incorrect Implementation of Authentication Algorithm vulnerability in the RestAPI. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.

Frequently asked questions

What is CVE-2025-43727?: Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.1.0.10, LTS2024 release Versions 7.13.1.0 through 7.13.1.25, LTS 2023 release versions 7.10.1.0 through 7.10.1.50, contain an incorrect Implementation of Authentication Algorithm vulnerability in the RestAPI. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Unauthorized access.
How severe is CVE-2025-43727?: CVE-2025-43727 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-43727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43727?: CVE-2025-43727 affects Dell Data Domain Operating System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43727?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-43727 have an EU (EUVD) identifier?: Yes. CVE-2025-43727 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31891.
When was CVE-2025-43727 published?: CVE-2025-43727 was published on 2025-10-07 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000348708/dsa-2025-159-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities

Affected products (1)

cpe:2.3:o:dell:data_domain_operating_system:*:*:*:*:*:*:*:*

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