What is CVE-2024-41433?

CVE-2024-41433 is a critical-severity vulnerability in Pingcap Tidb, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2024-09-03.

How severe is CVE-2024-41433?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Pingcap Tidb

CVE-2024-41433

PingCAP TiDB v8.1.0 was discovered to contain a buffer overflow via the component expression.ExplainExpressionList. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted input. NOTE: PingCAP maintains that the actual reproduction of this issue did not cause the security impact of service interruption to other users. They argue that this is a complex query bug and not a DoS vulnerability.

Vulnerability class: Buffer Overflow

Published 2024-09-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Pingcap Tidb — versions 8.1.0

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/pingcap/tidb/issues/53796 (Exploit, Issue Tracking)
gist.github.com/ycybfhb/eec3a1eefe4c85eb22f1bca6114359a1 (Third Party Advisory)

Frequently asked questions

What is CVE-2024-41433?: CVE-2024-41433 is a critical-severity vulnerability in Pingcap Tidb, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2024-09-03.
How severe is CVE-2024-41433?: Critical severity. CVSS v3 base score is 9.8 out of 10.