Quick answers
- Is CVE-2026-76587 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-76587 being exploited in the wild.
- How severe is CVE-2026-76587?
- High severity, with a CVSS score of 8.8, published 20 October 2026.
- Which products and versions are affected?
- IBM Planning Analytics 2.0, 2.1.
- Is there a fix for CVE-2026-76587?
- 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-2026-76587 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-76587?
- Check whether you run IBM Planning Analytics at an affected version. 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 is a CWE-121 stack-based buffer overflow in the TM1 C++ OData engine component, reachable via authenticated REST API calls. An authenticated attacker can craft a malicious request to overflow the stack buffer and execute arbitrary code with the privileges of the application. The vulnerability requires valid authentication credentials but no user interaction.
Affected products
- IBM Planning Analytics 2.0, 2.1
Timeline
- 2026-10-20: disclosed