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Vulnerability record · CVE-2019-16535 · published 30 December 2019

CVE-2019-16535: Clickhouse out-of-bounds read vulnerability

Clickhouse · Clickhouse

In all versions of ClickHouse before 19.14, an OOB read, OOB write and integer underflow in decompression algorithms can be used to achieve RCE or DoS via native protocol.

9.8 CVSS 3.1 Critical EPSS 1.7% · top 22.6% CWE-125 · Out-of-bounds readCWE-191 · CWE-191
9.8CVSS 3.1 base score, v2 7.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

In all versions of ClickHouse before 19.14, an OOB read, OOB write and integer underflow in decompression algorithms can be used to achieve RCE or DoS via native protocol.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://clickhouse.yandex/docs/en/security_changelog/ Vendor Advisory
https://clickhouse.yandex/docs/en/security_changelog/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-16535), CISA KEV, FIRST EPSS (scores of 2026-11-11). This page is refreshed as NVD updates the record.