CVE-2026-21385: Qualcomm Multiple Chipsets memory corruption in memory allocation

CVE-2026-21385 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2026-03-03

A security vulnerability exists in the firmware of several Qualcomm chipsets used in mobile devices. This flaw could allow a malicious application already on the device to gain deeper access to the system's memory, potentially leading to a full device compromise or data theft. This issue is known to have been exploited in the wild, making immediate updates critical for affected hardware.

Technologies: Qualcomm Multiple Chipsets, Qualcomm Sm7675p Firmware. Vendors: Qualcomm.

Quick answers

Is CVE-2026-21385 exploited in the wild?
Yes. CVE-2026-21385 is known to be exploited in the wild, first recorded on 3 March 2026. Treat it as urgent.
How severe is CVE-2026-21385?
Critical severity, with a CVSS score of 7.8, published 3 March 2026.
Which products and versions are affected?
Qualcomm SM7675P Firmware; Qualcomm SM8475P Firmware.
Is there a fix for CVE-2026-21385?
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-2026-21385 attacked?
It is attacked with local access, in device firmware.
Am I affected by CVE-2026-21385?
Check whether you run Qualcomm Multiple Chipsets, Qualcomm Sm7675p Firmware or Qualcomm SM8475P Firmware. 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

A memory corruption vulnerability exists in multiple Qualcomm chipsets due to an integer overflow (CWE-190) occurring during memory allocation alignment processes. An attacker with local access and low privileges can exploit this flaw to trigger memory corruption, potentially leading to unauthorized code execution or a complete system crash. The vulnerability has been confirmed as exploited in the wild and is addressed in the March 2026 Qualcomm security bulletin. The attack vector is local, requiring no user interaction to succeed once a malicious process is running on the system.

Affected products

  • Qualcomm SM7675P Firmware
  • Qualcomm SM8475P Firmware

Timeline

  • 2026-03-03: disclosed
  • 2026-03-03: advisory
  • 2026-03-03: kev added: Added to CISA KEV catalog
  • 2026-03-03: exploited

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