# CVE-2026-56440: Intel BigDL improper input validation escalation of privilege

Source: https://junglewise.ai/threats/cve-2026-56440-improper-input-validation-for-some-bigdl-before-version-2-5-0b1  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-56440 · Severity: info · Published 2026-11-10

Intel BigDL is a software library used for distributed machine learning and deep learning applications. This vulnerability allows an unprivileged user to escalate their privileges on a local system through improper input validation when they interact with the application. Intel has discontinued BigDL and will not provide security updates, recommending users uninstall the software immediately.

Technologies: [Intel BigDL](https://junglewise.ai/threats/technologies/bigdl). Vendors: [Intel](https://junglewise.ai/threats/vendors/intel).

## Quick answers

**Is CVE-2026-56440 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56440 being exploited in the wild.

**How severe is CVE-2026-56440?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Intel BigDL before 2.5.0b1.

**Is there a fix for CVE-2026-56440?** No fixed version is recorded yet. Intel recommends that users uninstall BigDL or discontinue use as soon as possible, as the product is discontinued and will receive no further security updates. 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-2026-56440 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-56440?** Check whether you run Intel BigDL 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.

## How to fix


Intel recommends that users uninstall BigDL or discontinue use as soon as possible, as the product is discontinued and will receive no further security updates.

## Technical details

The vulnerability is an improper input validation flaw in BigDL before version 2.5.0b1 that allows privilege escalation via a local attack vector. An unauthenticated attacker with low complexity requirements can exploit this with active user interaction to gain elevated privileges. The advisory notes that Intel has issued a Product Discontinuation Notice and will not release patches.

## Affected products

- Intel BigDL before 2.5.0b1

## Timeline

- 2026-11-10: disclosed

## References

- [https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01553.html](https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01553.html)

## Related threats

- [Intel BigDL deserialization of untrusted data escalation of privilege](https://junglewise.ai/threats/cve-2026-52899-deserialization-of-untrusted-data-for-some-bigdl-software-before)
- [Intel BigDL protection mechanism failure allowing privilege escalation](https://junglewise.ai/threats/cve-2026-20703-protection-mechanism-failure-for-some-bigdl-before-version-2-4-0)