CVE-2020-16273

HIGH
7.8
CVSS Score
Published: November 12, 2020 at 06:53 PM UTC
Updated: June 17, 2026 at 02:57 AM UTC
2 products affected across 1 vendorARMV8 M FirmwareArmv8-M

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%

Description

In Arm software implementing the Armv8-M processors (all versions), the stack selection mechanism could be influenced by a stack-underflow attack in v8-M TrustZone based processors. An attacker can cause a change to the stack pointer used by the Secure World from a non-secure application if the stack is not initialized. This vulnerability affects only the software that is based on Armv8-M processors with the Security Extension.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
arm-armv8-m (same device)
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-191

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