What is CVE-2026-42542?

CVE-2026-42542 is a high-severity vulnerability, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-06-10.

How severe is CVE-2026-42542?

High severity. CVSS v3 base score is 7.5 out of 10.

CVE-2026-42542

CVE-2026-42542

TDengine is an open source, time-series database optimized for Internet of Things devices. In versions 3.4.0.0 through 3.4.1.5, an unauthenticated remote attacker can crash the taosd server process by sending a single crafted RPC packet. N…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

security-advisories@github.com
security-advisories@github.com

Frequently asked questions

What is CVE-2026-42542?: CVE-2026-42542 is a high-severity vulnerability, classified under Integer Underflow. CVSS score: 7.5/10. Published 2026-06-10.
How severe is CVE-2026-42542?: High severity. CVSS v3 base score is 7.5 out of 10.