What is CVE-2025-63909?

CVE-2025-63909 is a high-severity vulnerability in Cohesity Tranzman, classified under Improper Privilege Management. CVSS score: 7.2/10. Published 2026-03-03.

How severe is CVE-2025-63909?

High severity. CVSS v3 base score is 7.2 out of 10.

Privilege escalation in Cohesity Tranzman

CVE-2025-63909

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.

Vulnerability class: Privilege Escalation

EPSS: 0.003 (25.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cohesity Tranzman — versions 4.0
N/a — versions n/a

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-63909?: CVE-2025-63909 is a high-severity vulnerability in Cohesity Tranzman, classified under Improper Privilege Management. CVSS score: 7.2/10. Published 2026-03-03.
How severe is CVE-2025-63909?: High severity. CVSS v3 base score is 7.2 out of 10.