CVE-2023-32722 | Stack-buffer Overflow in library module zbxjson

The zabbix/src/libs/zbxjson module is vulnerable to a buffer overflow when parsing JSON files via zbx_json_open.

Published: 2023-10-12 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-32722 is rated Moderate Risk (58.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 0.36%). Review affected assets and schedule remediation.

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-2023-32722

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 0.17% 0.36% +0.18%
2 2025-11-18 0.36% 0.17% -0.18%
3 2025-11-11 — 0.36% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-32722

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.6 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/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:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 6.0 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2023-32722

OS Trackers for CVE-2023-32722

vendor priority summary link
debian not yet assigned CVE-2023-32722 not yet assigned priority: Debian including 1 source packages (zabbix), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 4, open 1. https://security-tracker.debian.org/tracker/CVE-2023-32722
suse critical CVE-2023-32722 severity critical: SUSE including 12 source package names (zabbix, zabbix-agent, …), 24 product×package rows across 10 product lines (SUSE Linux Enterprise High Performance Computing 12 SP5, SUSE Linux Enterprise Server 12 SP4-LTSS, … (10 product lines)): Known Not Affected 14, Fixed 10. https://www.suse.com/security/cve/CVE-2023-32722/
ubuntu medium CVE-2023-32722 medium priority: Ubuntu including 1 source packages (zabbix), 9 status rows across 9 suites (bionic, focal, jammy, lunar, mantic, noble, trusty, upstream, xenial): not-affected 5, ignored 2, DNE 1, released 1. https://ubuntu.com/security/CVE-2023-32722

Affected software / configurations for CVE-2023-32722

Vendor Product Version Raw CPE
zabbix zabbix >= 6.0.0, <= 6.0.20 cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
zabbix zabbix >= 6.4.0, <= 6.4.5 cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
zabbix zabbix 7.0.0 cpe:2.3:a:zabbix:zabbix:7.0.0:alpha1:*:*:*:*:*:*
zabbix zabbix 7.0.0 cpe:2.3:a:zabbix:zabbix:7.0.0:alpha2:*:*:*:*:*:*
zabbix zabbix 7.0.0 cpe:2.3:a:zabbix:zabbix:7.0.0:alpha3:*:*:*:*:*:*

References for CVE-2023-32722

cvelogic Threat Intelligence