CVE-2019-16535: Clickhouse

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

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.

Affected products

• Clickhouse Clickhouse: before 19.14 (fixed in 19.14)

Published 2019-12-30. Last modified 2026-06-17.