CVE-2021-30636
CVE-2021-30636 is a critical-severity vulnerability in Mediatek Linkit Software Development Kit with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 1% (71st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-190
- Affected product: Mediatek Linkit Software Development Kit
- Published:
- Last modified:
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.
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 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-30636 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-30636?
- CVE-2021-30636 affects Mediatek Linkit Software Development Kit. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-30636?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-30636 published?
- CVE-2021-30636 was published on 2022-01-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mediatek:linkit_software_development_kit:*:*:*:*:*:*:*:*
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