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.

Published: 2025-08-04 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-21120 is rated Moderate Risk (50.7/100): CVSS High severity, with low exploitation likelihood (EPSS 0.26%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-21120

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-31 0.05% 0.26% +0.21%
2 2026-04-09 0.04% 0.05% +0.01%
3 2026-02-26 — 0.04% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-21120

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.3 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 5.5 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2025-21120

Affected software / configurations for CVE-2025-21120

Vendor Product Version Raw CPE
dell avamar 19.4 cpe:2.3:a:dell:avamar:19.4:*:*:*:virtual:esxi:*:*
dell avamar 19.4 cpe:2.3:a:dell:avamar:19.4:*:*:*:virtual:vmware:*:*
dell avamar 19.4 cpe:2.3:a:dell:avamar:19.4:*:*:*:virtual:vsphere:*:*
dell avamar 19.7 cpe:2.3:a:dell:avamar:19.7:*:*:*:virtual:esxi:*:*
dell avamar 19.7 cpe:2.3:a:dell:avamar:19.7:*:*:*:virtual:vmware:*:*
dell avamar 19.7 cpe:2.3:a:dell:avamar:19.7:*:*:*:virtual:vsphere:*:*
dell avamar 19.8 cpe:2.3:a:dell:avamar:19.8:*:*:*:virtual:esxi:*:*
dell avamar 19.8 cpe:2.3:a:dell:avamar:19.8:*:*:*:virtual:vmware:*:*
dell avamar 19.8 cpe:2.3:a:dell:avamar:19.8:*:*:*:virtual:vsphere:*:*
dell avamar 19.9 cpe:2.3:a:dell:avamar:19.9:*:*:*:virtual:esxi:*:*
dell avamar 19.9 cpe:2.3:a:dell:avamar:19.9:*:*:*:virtual:vmware:*:*
dell avamar 19.9 cpe:2.3:a:dell:avamar:19.9:*:*:*:virtual:vsphere:*:*
dell avamar 19.10 cpe:2.3:a:dell:avamar:19.10:-:*:*:virtual:esxi:*:*
dell avamar 19.10 cpe:2.3:a:dell:avamar:19.10:-:*:*:virtual:vmware:*:*
dell avamar 19.10 cpe:2.3:a:dell:avamar:19.10:-:*:*:virtual:vsphere:*:*
dell avamar 19.10 cpe:2.3:a:dell:avamar:19.10:sp1:*:*:virtual:esxi:*:*
dell avamar 19.10 cpe:2.3:a:dell:avamar:19.10:sp1:*:*:virtual:vmware:*:*
dell avamar 19.10 cpe:2.3:a:dell:avamar:19.10:sp1:*:*:virtual:vsphere:*:*
dell avamar 19.12 cpe:2.3:a:dell:avamar:19.12:*:*:*:virtual:esxi:*:*
dell avamar 19.12 cpe:2.3:a:dell:avamar:19.12:*:*:*:virtual:vmware:*:*
dell avamar 19.12 cpe:2.3:a:dell:avamar:19.12:*:*:*:virtual:vsphere:*:*

References for CVE-2025-21120

cvelogic Threat Intelligence