What is CVE-2025-63912?

CVE-2025-63912 is a high-severity vulnerability in Cohesity Tranzman, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2026-03-03.

How severe is CVE-2025-63912?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Cohesity Tranzman

CVE-2025-63912

Cohesity TranZman Migration Appliance Release 4.0 Build 14614 was discovered to use a weak cryptography algorithm for data encryption, allowing attackers to trivially reverse the encyption and expose credentials.

Vulnerability class: POODLE (CVE-2014-3566)

Published 2026-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (2.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Cohesity Tranzman — versions 4.0

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

github.com/GregDurys/Cohesity-TranZman-CVEs (Third Party Advisory)
gist.github.com/GregDurys/4c2765d76272cda64dfc78f7a75a9251 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-63912?: CVE-2025-63912 is a high-severity vulnerability in Cohesity Tranzman, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 7.5/10. Published 2026-03-03.
How severe is CVE-2025-63912?: High severity. CVSS v3 base score is 7.5 out of 10.