CVE-2021-43267
CVSS v3
9.8
CRITICAL
EPSS Score
57.9 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.
Technical details
- Published
- 2021-11-02
Frequently asked questions
What is CVE-2021-43267?
An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. The Transparent Inter-Process Communication (TIPC) functionality allows remote attackers to exploit insufficient validation of user-supplied sizes for the MSG_CRYPTO message type.
Is CVE-2021-43267 actively exploited?
Active exploitation of CVE-2021-43267 has not been confirmed. Its EPSS score was 57.9% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-43267?
CVE-2021-43267 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-43267 affecting your environment?
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