What is CVE-2025-66483?

CVE-2025-66483 is a medium-severity vulnerability in IBM Aspera Shares, classified under Insufficient Session Expiration. CVSS score: 6.3/10. Published 2026-04-01.

How severe is CVE-2025-66483?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in IBM Aspera Shares

CVE-2025-66483

IBM Aspera Shares 1.9.9 through 1.11.0 does not invalidate session after a password reset which could allow an authenticated user to impersonate another user on the system.

Published 2026-04-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.002 (6.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

IBM Aspera Shares — versions 1.9.9
IBM Aspera Shares

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

www.ibm.com/support/pages/node/7267848 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-66483?: CVE-2025-66483 is a medium-severity vulnerability in IBM Aspera Shares, classified under Insufficient Session Expiration. CVSS score: 6.3/10. Published 2026-04-01.
How severe is CVE-2025-66483?: Medium severity. CVSS v3 base score is 6.3 out of 10.