How severe is CVE-2025-43891?

CVE-2025-43891 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-43891 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43891?

CVE-2025-43891 affects Dell Data Domain Operating System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43891?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-43891 have an EU (EUVD) identifier?

Yes. CVE-2025-43891 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31916.

When was CVE-2025-43891 published?

CVE-2025-43891 was published on 2025-10-07 and last updated on 2026-06-17.

CVE-2025-43891

CVE-2025-43891 is a medium-severity vulnerability in Dell Data Domain Operating System with a CVSS 3.x base score of 5.3. 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-327.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31916
Weakness: CWE-327
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 8.3.0.15, LTS2025 release version 8.3.1.0, LTS2024 release versions 7.13.1.0 through 7.13.1.30, LTS 2023 release versions 7.10.1.0 through 7.10.1.60, contain an use of a Broken or Risky Cryptographic Algorithm vulnerability in the Authentication. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.

Frequently asked questions

What is CVE-2025-43891?: Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 7.7.1.0 through 8.3.0.15, LTS2025 release version 8.3.1.0, LTS2024 release versions 7.13.1.0 through 7.13.1.30, LTS 2023 release versions 7.10.1.0 through 7.10.1.60, contain an use of a Broken or Risky Cryptographic Algorithm vulnerability in the Authentication. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Information disclosure.
How severe is CVE-2025-43891?: CVE-2025-43891 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-43891 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43891?: CVE-2025-43891 affects Dell Data Domain Operating System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43891?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43891 have an EU (EUVD) identifier?: Yes. CVE-2025-43891 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31916.
When was CVE-2025-43891 published?: CVE-2025-43891 was published on 2025-10-07 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000376224/dsa-2025-333-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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