Threats / Commvault / CVE-2025-34028
CVE-2025-34028
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-08-04
Commvault Command Center vulnerability
Commvault Command Center contains a path traversal vulnerability (CWE-22) allowing remote unauthenticated attackers to execute arbitrary code. The vulnerability is actively exploited in the wild.
Verdict
Today item — known-exploited.
A critical remote code execution flaw in Commvault Command Center enables unauthenticated attackers to bypass file system restrictions through path traversal, leading to arbitrary code execution. Active exploitation in the wild indicates immediate risk to deployed instances.
CISA KEV Yes · 2025-05-025EPSS 0.97657 (verify live)6Exploit Weaponized · public PoC7CVSS 9.33CISA SSVC Exploitation: active · Automatable: yes · Impact: total4
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Fully weaponized — public exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
241 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-05-02).
Probability (EPSS)
EPSS 0.97657 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
CVSS 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H) · Affected: Commvault, Command Center. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 4.0, set at disclosure.
Weakness (CWE)
Mapped to CWE-22 Path Traversal, CWE-306 Missing Authentication — weakness family: Path traversal / file, Authentication.CWE — CNA-assigned (CVE.org); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: yes · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog 10 days after the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
WeaknessCWE-22 · Path TraversalCWE-306 · Missing AuthenticationPath traversal / file, Authentication
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious request containing path traversal sequences to escape intended directory restrictions in the Command Center application.
Business
Attackers gain unauthorized file system access to sensitive backup infrastructure, compromising data protection controls.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I leverage the path traversal to write or modify executable files in locations where the application process has write permissions.
Business
Arbitrary code execution within the Command Center process context enables attackers to establish persistence and lateral movement within backup environments.
3
Lateral reach — past segmentation narrative 3
Attacker
I execute commands with the privileges of the Command Center service account to exfiltrate backup data or encrypt it for extortion.
Business
Backup systems become compromised, enabling data theft, destruction, or ransom scenarios that undermine business continuity and data recovery capabilities.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by VulnCheckCNA
Credited with finding itSonny of watchTowrfinder