Quick answers
- Is CVE-2026-66987 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-66987 being exploited in the wild.
- How severe is CVE-2026-66987?
- Medium severity, with a CVSS score of 5.3, published 6 November 2026.
- Which products and versions are affected?
- HCL AION.
- Is there a fix for CVE-2026-66987?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-66987 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-66987?
- Check whether you run HCL AION. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability stems from insufficient rate-limiting or delays in the account lockout mechanism, allowing an attacker to perform repeated failed login attempts without adequate restrictions. This is a brute-force attack vector requiring network access and no prior authentication. A successful attack results in account compromise and unauthorized access to the system.
Affected products
- HCL AION
Timeline
- 2026-11-06: disclosed