CVE-2023-29451

highpriority · track · 30EPSS 0.008 · 56 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.78% (56th) EPSS

CVSS 7.5 · high

Is it mine?

41 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.7–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.14.7mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:Lsecondary · ENISA EU

v3.14.7mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:Lsecondary · security@zabbix.comexploitability 1.2 · impact 3.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-20USCWE-787US

affected products (41)

Products and version ranges known to be affected.

Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Zabbix Zabbix <4.0.46rc1all versionscert_bundDE
Zabbix Zabbix <5.0.36rc1all versionscert_bundDE
Zabbix Zabbix <6.0.19rc1all versionscert_bundDE
Zabbix Zabbix <6.2.9rc2all versionscert_bundDE
Zabbix Zabbix <6.4.4rc1all versionscert_bundDE
Zabbix Zabbix <7.0.0alpha2all versionscert_bundDE
Zabbix Zabbix< 4.0.46rc1cert_bundDE
Zabbix Zabbix< 5.0.36rc1cert_bundDE
Zabbix Zabbix< 6.0.19rc1cert_bundDE
Zabbix Zabbix< 6.2.9rc2cert_bundDE
Zabbix Zabbix< 6.4.4rc1cert_bundDE
Zabbix Zabbix< 7.0.0alpha2cert_bundDE
Zabbix Zabbix≤ 6.0 ≤6.0.14enisa_euvdEU
Zabbix Zabbix≤ 6.4 ≤6.4.0enisa_euvdEU
Zabbix Zabbix≤ 6.2 ≤6.2.8enisa_euvdEU
Zabbix Zabbix≤ 7.0.0alpha1 ≤7.0.0alpha1enisa_euvdEU
Zabbix LLC. Zabbix≤ 6.4.0:rc3fstec_bduRU
Zabbix LLC. Zabbix≤ 6.4.0:alpha1fstec_bduRU
Zabbix LLC. Zabbix≤ 6.4.0:beta1fstec_bduRU

showing 20 of 41

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1753Zabbix: Mehrere SchwachstellenDeutsch2023-07-13csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Zabbix ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, um einen Denial of Service Zustand herbeizuführen und um nicht näher beschriebene Auswirkungen zu verursachen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2023-07-13modified 2026-06-17

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+16123 more

references (8)

External citations — patches, advisories, analysis.

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