CVE-2021-27439

HIGH

TencentOS-tiny 3.1.0 - Memory Corruption

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Third Party Advisory, US Government Resource x_refsource_confirm
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

Scores

CVSS v3 7.3
EPSS 0.0135
EPSS Percentile 68.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-190
Status published
Products (1)
tencent/tencentos-tiny 3.1.0
Published May 03, 2022
Tracked Since Feb 18, 2026