# CVE-2026-20703: Intel BigDL protection mechanism failure allowing privilege escalation

Source: https://junglewise.ai/threats/cve-2026-20703-protection-mechanism-failure-for-some-bigdl-before-version-2-4-0  
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-2026-20703 · Severity: info · Published 2026-11-10

Intel BigDL is a software library used in machine learning and data processing applications. A protection mechanism failure in versions before 2.4.0 allows an unprivileged user with local access to escalate their privileges to higher system access levels when a privileged user is present. Intel has discontinued BigDL and recommends immediate uninstallation rather than applying patches.

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

## Quick answers

**Is CVE-2026-20703 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-20703 being exploited in the wild.

**How severe is CVE-2026-20703?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** Intel BigDL before 2.4.0.

**Is there a fix for CVE-2026-20703?** No fixed version is recorded yet. Intel recommends that users uninstall BigDL or discontinue its use immediately, as the product has been discontinued and will not receive 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-2026-20703 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-20703?** 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 its use immediately, as the product has been discontinued and will not receive further security updates.

## Technical details

CVE-2026-20703 is a protection mechanism failure in BigDL's Ring 3 user application environment that permits local privilege escalation. The vulnerability requires a privileged user present on the system, passive user interaction, and low attack complexity. An unauthenticated attacker with local access can exploit this to gain elevated privileges affecting system confidentiality and integrity.

## Affected products

- Intel BigDL before 2.4.0

## Timeline

- 2026-11-10: advisory

## 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 improper input validation escalation of privilege](https://junglewise.ai/threats/cve-2026-56440-improper-input-validation-for-some-bigdl-before-version-2-5-0b1)
- [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)