high Known exploitedREV. 01

CVE-2025-3928Commvault Web Server — authenticated attacker plants web shells

Commvault's web server carries a flaw the vendor does not describe, which an authenticated attacker uses to create and run web shells on it. No weakness class is recorded on the entry.

YOUR NEXT MOVE

Upgrade to 11.36.46, 11.32.89, 11.28.141 or 11.20 per the Commvault advisory now; then sweep the web directories for pages nobody deployed.

Read the risk

THE VITAL STATS
CVSS score
8.8/ 10
CVSS v3.1
EPSS probability
2%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2025-04-25
Added to KEV
2025-04-28
Exploit published
Not recorded
Confidence
medium
Kill chain
persistence
MITRE ATT&CK
—
Severity
high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attacker needsAn authenticated account on the Commvault web server.

Fixed inCommvault 11.36.46, Commvault 11.32.89, Commvault 11.28.141

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2025-3928 · CRDS 0.1 · Issued 2026-09-24