CVE-2021-27439
7.3 · HIGHOverview
CVE-2021-27439 is a high-severity vulnerability affecting tencent tencentos-tiny. It was published on May 3, 2022 and has a CVSS 3.1 base score of 7.3 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
TencentOS-tiny version 3.1.0 is vulnerable to integer wrap-around in function 'tos_mmheap_alloc incorrect calculation of effective memory allocation size. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Remediation
Check the references section for vendor advisories and patches from tencent. Update tencentos-tiny to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2021-27439?
CVE-2021-27439 is a high-severity vulnerability affecting tencent tencentos-tiny. It was published on May 3, 2022 and has a CVSS 3.1 base score of 7.3 (HIGH).
How severe is CVE-2021-27439?
This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-27439?
Check the references section for vendor advisories and patches from tencent. Update tencentos-tiny to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-27439?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-27439 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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