# CVE-2026-50077: BlackBerry QVM invalid memory access in MSI-X table handling

Source: https://junglewise.ai/threats/cve-2026-50077-invalid-memory-access-via-the-msi-x-table-in-qvm-could-allow-an  
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-2026-50077 · Severity: high · CVSS 7.7 · Published 2026-11-10

BlackBerry QVM (QEMU-based Virtual Machine) is a hypervisor component that runs guest virtual machines in enterprise mobile environments. An attacker with access to a guest system could exploit invalid memory access in the MSI-X interrupt table handling to corrupt memory, leak sensitive information, or crash the QVM, potentially compromising the host and other guest systems.

Vendors: [Blackberry](https://junglewise.ai/threats/vendors/blackberry).

## Quick answers

**Is CVE-2026-50077 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-50077 being exploited in the wild.

**How severe is CVE-2026-50077?** High severity, with a CVSS score of 7.7, published 10 November 2026.

**Which products and versions are affected?** BlackBerry QVM.

**Is there a fix for CVE-2026-50077?** 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-2026-50077 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2026-50077?** Check whether you run Blackberry QVM. 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

Invalid memory access in QVM's MSI-X (Message Signaled Interrupts eXtended) table handling allows a guest-level attacker to trigger memory corruption or information disclosure. The vulnerability requires guest access but no additional privileges, and successful exploitation could lead to code execution within the QVM context with potential impact on the host hypervisor or other guest systems.

## Affected products

- BlackBerry QVM

## Timeline

- 2026-11-10: disclosed

## References

- [https://support.blackberry.com/pkb/s/article/141343](https://support.blackberry.com/pkb/s/article/141343)