CVE-2022-44011

An issue was discovered in ClickHouse before 22.9.1.2603. An authenticated user (with the ability to load data) could cause a heap buffer overflow and crash the server by inserting a malformed CapnProto object. The fixed versions are 22.9.1.2603, 22.8.2.11, 22.7.4.16, 22.6.6.16, and 22.3.12.19.

Published: 2023-11-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-44011 is rated Low Risk (34.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.09%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-44011

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.27% 0.09% -0.19%
2 2025-11-18 0.09% 0.27% +0.19%
3 2025-03-30 — 0.09% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-44011

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2022-44011

OS Trackers for CVE-2022-44011

vendor priority summary link
debian not yet assigned CVE-2022-44011 not yet assigned priority: Debian including 1 source packages (clickhouse), 2 status rows across 2 suites (bookworm, bullseye): open 2. https://security-tracker.debian.org/tracker/CVE-2022-44011
ubuntu medium CVE-2022-44011 medium priority: Ubuntu including 1 source packages (clickhouse), 12 status rows across 12 suites (bionic, focal, jammy, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 5, DNE 4, needs-triage 3. https://ubuntu.com/security/CVE-2022-44011

Affected software / configurations for CVE-2022-44011

Vendor Product Version Raw CPE
clickhouse clickhouse < 22.3.12.19 cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*
clickhouse clickhouse >= 22.6, < 22.6.6.16 cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*
clickhouse clickhouse >= 22.7, < 22.7.4.16 cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*
clickhouse clickhouse >= 22.8, < 22.8.2.11 cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*
clickhouse clickhouse >= 22.9, < 22.9.1.2603 cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:*

References for CVE-2022-44011

URL Tags
https://clickhouse.com Product
cvelogic Threat Intelligence