What is CVE-2026-62351?

CVE-2026-62351 is a high-severity vulnerability in Taosdata Tdengine, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-07-15.

How severe is CVE-2026-62351?

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

Out-of-bounds Read in Taosdata Tdengine

CVE-2026-62351

TDengine is a time-series database optimized for Internet of Things devices. Prior to 3.4.1.15, source/libs/transport/src/transComm.c transDecompressMsg() read STransCompMsg.contLen when pHead->comp == 1 without first validating that the RPC packet contained the 8-byte STransCompMsg structure, causing an unauthenticated out-of-bounds read, uncontrolled allocation, integer underflow, and server crash. This issue is fixed in version 3.4.1.15.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (38.0th percentile) — read the EPSS interpretation.

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.

Affected products

Taosdata Tdengine — versions < 3.4.1.15

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-62351?: CVE-2026-62351 is a high-severity vulnerability in Taosdata Tdengine, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-07-15.
How severe is CVE-2026-62351?: High severity. CVSS v3 base score is 7.5 out of 10.