What is CVE-2025-66486?

CVE-2025-66486 is a medium-severity vulnerability in Ibm Aspera Shares, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 4.8/10. Published 2026-04-01.

How severe is CVE-2025-66486?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Ibm Aspera Shares

CVE-2025-66486

IBM Aspera Shares 1.9.9 through 1.11.0 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.

EPSS: 0.000 (1.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Ibm Aspera Shares — versions 1.9.9

Weakness classification (CWE)

CWE-80 — Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

References

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

Frequently asked questions

What is CVE-2025-66486?: CVE-2025-66486 is a medium-severity vulnerability in Ibm Aspera Shares, classified under Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS). CVSS score: 4.8/10. Published 2026-04-01.
How severe is CVE-2025-66486?: Medium severity. CVSS v3 base score is 4.8 out of 10.