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CVE-2021-27439

🗓️ 09 Jan 2026 08:53:31Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 11 Views

TencentOS-tiny 3.1.0 suffers from integer wrap-around causing memory allocation issues and potential remote code execution.

Related
Refs
ReporterTitlePublishedViews
Family
BDU FSTEC
The vulnerability of the tos_mmheap_alloc function in the real-time operating system TencentOS allows a hacker to execute arbitrary code.
13 Sep 202100:00
bdu_fstec
Circl
CVE-2021-27439
4 May 202200:34
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CNNVD
Tencent OS-tiny 输入验证错误漏洞
29 Apr 202100:00
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CVE-2021-27439
3 May 202220:26
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Cvelist
CVE-2021-27439 TencentOS-tiny Integer Overflow or Wraparound
3 May 202220:26
cvelist
EUVD
EUVD-2021-14193
7 Oct 202500:30
euvd
ICS
Multiple RTOS (Update E)
29 Apr 202100:00
ics
NVD
CVE-2021-27439
3 May 202221:15
nvd
OSV
CVE-2021-27439
3 May 202221:15
osv
Prion
Integer overflow
3 May 202221:15
prion
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09 Jan 2026 08:53Current
7.6High risk
Vulners AI Score7.6
CVSS 27.5
CVSS 3.17.3 - 9.8
EPSS0.01353
SSVC
11