# CVE-2026-86358: Dell Update Package Framework stack-based buffer overflow

Source: https://junglewise.ai/threats/cve-2026-86358-dell-update-package-framework-stack-based-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-16. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-86358 · Severity: medium · CVSS 6.5 · Published 2026-09-16

Dell Update Package Framework is a system utility used to deploy firmware and driver updates on Dell hardware. A stack-based buffer overflow in versions before 26.07.03 allows an unauthenticated attacker on the adjacent network to crash the service or potentially execute code remotely, disrupting critical infrastructure updates and potentially compromising system integrity.

Technologies: [Dell Update Package Framework](https://junglewise.ai/threats/technologies/update-package-framework). Vendors: [Dell](https://junglewise.ai/threats/vendors/dell).

## Quick answers

**Is CVE-2026-86358 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-86358 being exploited in the wild.

**How severe is CVE-2026-86358?** Medium severity, with a CVSS score of 6.5, published 16 September 2026.

**Which products and versions are affected?** Dell Update Package Framework prior to 26.07.03.

**Is there a fix for CVE-2026-86358?** 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-2026-86358 attacked?** It is attacked from the adjacent network, in a hosted service.

**Am I affected by CVE-2026-86358?** Check whether you run Dell Update Package Framework 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

CVE-2026-86358 is a stack-based buffer overflow vulnerability in Dell Update Package (DUP) Framework prior to version 26.07.03. The vulnerability is triggered by unauthenticated adjacent network access (AV:A), requires no user interaction, and can lead to remote code execution or denial of service. The attack vector is adjacent network, meaning an attacker must be on the same network segment as the affected system. Patch is available in version 26.07.03 and later.

## Affected products

- Dell Update Package Framework prior to 26.07.03

## Timeline

- 2026-09-16: disclosed

## References

- [https://www.dell.com/support/kbdoc/en-us/000509455/dsa-2026-417-security-update-for-dell-update-package-dup-framework-vulnerabilities](https://www.dell.com/support/kbdoc/en-us/000509455/dsa-2026-417-security-update-for-dell-update-package-dup-framework-vulnerabilities)

## Related threats

- [Dell Update Package Framework link following vulnerability](https://junglewise.ai/threats/cve-2026-71182-dell-update-package-framework-link-following-vulnerability)
- [Dell Update Package Framework symlink following privilege escalation](https://junglewise.ai/threats/cve-2026-71181-dell-update-package-framework-symlink-following-privilege)
- [Dell Update Package Framework unchecked return value privilege escalation](https://junglewise.ai/threats/cve-2026-71180-dell-update-package-framework-unchecked-return-value-privilege)
- [Dell Update Package Framework OS command injection](https://junglewise.ai/threats/cve-2026-71179-dell-update-package-framework-os-command-injection)