What’s Vulnerable › Vulnerabilities

CVE-2021-30636

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-24 · updated 2026-06-17
• Weakness: CWE-190

Description

In MediaTek LinkIt SDK before 4.6.1, there is a possible memory corruption due to an integer overflow during mishandled memory allocation by pvPortCalloc and pvPortRealloc.

Affected products

• Mediatek Linkit Software Development Kit: before 4.6.1 — fixed in 4.6.1

How to fix

Upgrade to a fixed version: Mediatek Linkit Software Development Kit 4.6.1. Check the vendor advisory for mitigations.

References

• https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
• https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

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