7.5

CVE-2023-29451: zabbix Improper Input Validation

CVSS: 7.5v3.1HighModified
AliasesDEBIAN-CVE-2023-29451
Published 13-07-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-29451 is a high (CVSS 7.5) Improper Input Validation vulnerability in zabbix. EPSS estimates a 0.78% chance of exploitation in the next 30 days, higher than 55.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.78%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DLA-3538-1

Timeline

  1. 13-07-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.78%

Chance of exploitation in the next 30 days

Percentile

55%

Versus all other CVEs

30-day change

0.00 pp

From 0.78% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.78%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • zabbixAll versions (No fix recorded) | < 1:6.0.23+dfsg-1
Zabbix1 product
  • zabbixEOL≥ 6.0, ≤ 6.0.14 | ≥ 6.2, ≤ 6.2.8 | ≥ 6.4, ≤ 6.4.0 | 7.0.0alpha1 | ≤ 6.0.14 | ≥ 6.4.2, ≤ 6.4.4 | 6.4.0:alpha1 | 6.4.0:beta1 | 6.4.0:beta2 | 6.4.0:beta3 | 6.4.0:beta4 | 6.4.0:beta5 | 6.4.0:beta6 | 6.4.0:rc2 | 6.4.0:rc3 | 6.4.0:rc4

2 vendors · 2 products

References

3 links