CVE-2021-30636
CRITICALCVSS 9.8/10EPSS 1.47%
Last modified
CVE-2021-30636 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.47% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mediatek | Linkit Software Development Kit | < 4.6.1 |
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Mitigation, Third Party Advisory, US Government Resource, VDB Entry
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Mitigation, Third Party Advisory, US Government Resource, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30636?
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.
How severe is CVE-2021-30636?
CVE-2021-30636 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.47% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30636?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-30636?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST