What is the CVSS score of CVE-2025-63909?

CVE-2025-63909 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Tranzman are affected by CVE-2025-63909?

Cohesity TranZman Migration Appliance versions 4.0 Build 14614 contain a critical access control flaw that allows attackers to gain root-level privileges and manipulate arbitrary files on affected…

Is there a public PoC exploit available for CVE-2025-63909?

Yes, a public proof-of-concept exploit is available for CVE-2025-63909. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-63909?

Within 24 hours: Identify and inventory all Cohesity TranZman Migration Appliance instances running Build 14614, isolate them from production networks if possible, and restrict administrative access. Within 7 days: Implement network segmentation to limit lateral movement from affected appliances, enable enhanced logging and monitoring, and contact Cohesity support for patch availability and interim guidance. Within 30 days: Deploy patches immediately upon release or replace affected appliances with secure alternatives; conduct forensic review of logs for unauthorized access during the vulnerability window.

Tranzman CVE-2025-63909

HIGH

Improper Privilege Management (CWE-269)

2026-03-03 cve@mitre.org

Privilege Escalation Authentication Bypass Tranzman

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 05, 2026 - 00:35 vuln.today

Public exploit code

CVE Published

Mar 03, 2026 - 18:16 nvd

HIGH 7.2

DescriptionCVE.org

Incorrect access control in the component /opt/SRLtzm/bin/TapeDumper of Cohesity TranZman Migration Appliance Release 4.0 Build 14614 allows attackers to escalate privileges to root and read and write arbitrary files.

AnalysisAI

Technical ContextAI

Classified as CWE-269 (Improper Privilege Management). Affects the the component of Tranzman. Incorrect access control in the component /opt/SRLtzm/bin/TapeDumper of Cohesity TranZman Migration Appliance Release 4.0 Build 14614 allows attackers to escalate privileges to root and read and write arbitrary files.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

CVE-2025-63909 vulnerability details – vuln.today

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Tranzman CVE-2025-63909

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code