Vulnerability in Hcl Software Aion

CVE-2026-66987

HCL AION is affected by a vulnerability where the account lockout mechanism did not sufficiently restrict repeated failed login attempts, allowing an attacker to make a large number of password guesses against a user account. This may increase the risk of account compromise through brute-force attacks, potentially resulting in unintended behavior or security impact under certain conditions.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-66987?
CVE-2026-66987 is a medium-severity vulnerability in Hcl Software Aion, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 5.3/10. Published 2026-11-06.
How severe is CVE-2026-66987?
Medium severity. CVSS v3 base score is 5.3 out of 10.