CASCACascade Atlas

Evidence dossier

CVE-2025-3928

Commvault Web Server unspecified vulnerability

64.6–79.8Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Commvault Web Server has an unspecified vulnerability that can be exploited by a remote, authenticated attacker. According to the Commvault advisory: "Webservers can be compromised through bad actors creating and executing webshells." Fixed in version 11.36.46, 11.32.89, 11.28.141, and 11.20.217 for Windows and Linux platforms. This vulnerability was added to the CISA Known Exploited Vulnerabilities (KEV) Catalog on 2025-04-28.

State
PUBLISHED
Published
Apr 25, 2025
Updated
Feb 26, 2026
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

FIRST EPSS2.00%

2026-07-18 · v2026.06.15 · percentile 78.5%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

cisa-cgoriginal assertion
container

Commvault Web Server unspecified vulnerability

CVEderivative copy
container

CVE Program Container

CISA KEVoriginal assertion
observed_exploitation

Commvault Web Server Unspecified Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.019970000000; percentile 0.784920000000

Applicability

Cited product scope

Trace impact →
CommvaultWeb Server
[{"status": "affected", "version": "11.36.0", "lessThan": "11.36.46", "versionType": "custom"}, {"status": "unaffected", "version": "11.36.46"}, {"status": "affected", "version": "11.32.0", "lessThan": "11.32.89", "versionType": "custom"}, {"status": "unaffected", "version": "11.32.89"}, {"status": "affected", "version": "11.28.0", "lessThan": "11.28.141", "versionType": "custom"}, {"status": "unaffected", "version": "11.28.141"}, {"status": "affected", "version": "11.20.0", "lessThan": "11.20.217", "versionType": "custom"}, {"status": "unaffected", "version": "11.20.217"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*; start including 11.20.0; end excluding 11.20.217supported
Unknown vendorUnknown product
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*; start including 11.28.0; end excluding 11.28.141supported
Unknown vendorUnknown product
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*; start including 11.32.0; end excluding 11.32.89supported
Unknown vendorUnknown product
cpe:2.3:a:commvault:commvault:*:*:*:*:*:*:*:*; start including 11.36.0; end excluding 11.36.46supported
Unknown vendorUnknown product
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*constrained

Assessments

CVSS by origin

8.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7
9119a7d8-5eab-497f-8521-727c672e3725CVSS 4.0 · role SecondaryCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
8.8
9119a7d8-5eab-497f-8521-727c672e3725CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7
cisa-cgCVSS 4.0 · role unknownCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8
cisa-cgCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.