How severe is CVE-2025-21120?

CVE-2025-21120 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-21120 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21120?

CVE-2025-21120 primarily affects Dell Avamar. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-21120?

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-2025-21120 have an EU (EUVD) identifier?

Yes. CVE-2025-21120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23530.

When was CVE-2025-21120 published?

CVE-2025-21120 was published on 2025-08-04 and last updated on 2026-06-17.

CVE-2025-21120

CVE-2025-21120 is a high-severity vulnerability in Dell Avamar with a CVSS 3.x base score of 8.3. 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-650.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23530
Weakness: CWE-650
Affected product: Dell Avamar
Published: 2025-08-04
Last modified: 2026-06-17

Description

Dell Avamar, versions prior to 19.10 SP1 with patch 338904, contains a Trusting HTTP Permission Methods on the Server-Side vulnerability in Security. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Information exposure.

Frequently asked questions

What is CVE-2025-21120?: Dell Avamar, versions prior to 19.10 SP1 with patch 338904, contains a Trusting HTTP Permission Methods on the Server-Side vulnerability in Security. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to Information exposure.
How severe is CVE-2025-21120?: CVE-2025-21120 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-21120 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21120?: CVE-2025-21120 primarily affects Dell Avamar. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-21120?: 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-2025-21120 have an EU (EUVD) identifier?: Yes. CVE-2025-21120 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23530.
When was CVE-2025-21120 published?: CVE-2025-21120 was published on 2025-08-04 and last updated on 2026-06-17.

References

https://www.dell.com/support/kbdoc/en-us/000347698/dsa-2025-271-security-update-for-dell-avamar-and-dell-avamar-virtual-edition-multiple-vulnerabilities

Affected products (21)

cpe:2.3:a:dell:avamar:19.4:*:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.4:*:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.4:*:*:*:virtual:vsphere:*:*
cpe:2.3:a:dell:avamar:19.7:*:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.7:*:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.7:*:*:*:virtual:vsphere:*:*
cpe:2.3:a:dell:avamar:19.8:*:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.8:*:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.8:*:*:*:virtual:vsphere:*:*
cpe:2.3:a:dell:avamar:19.9:*:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.9:*:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.9:*:*:*:virtual:vsphere:*:*
cpe:2.3:a:dell:avamar:19.10:-:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.10:-:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.10:-:*:*:virtual:vsphere:*:*
cpe:2.3:a:dell:avamar:19.10:sp1:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.10:sp1:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.10:sp1:*:*:virtual:vsphere:*:*
cpe:2.3:a:dell:avamar:19.12:*:*:*:virtual:esxi:*:*
cpe:2.3:a:dell:avamar:19.12:*:*:*:virtual:vmware:*:*
cpe:2.3:a:dell:avamar:19.12:*:*:*:virtual:vsphere:*:*

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