What is CVE-2018-1000833?

CVE-2018-1000833 is a critical-severity vulnerability in Zoneminder, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2018-12-20.

How severe is CVE-2018-1000833?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Zoneminder

CVE-2018-1000833

ZoneMinder version <= 1.32.2 contains a Other/Unknown vulnerability in User-controlled parameter that can result in Disclosure of confidential data, denial of service, SSRF, remote code execution.

Vulnerability class: Insecure Deserialization

Published 2018-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.032 (87.8th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000

Affected products

Zoneminder

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

0dd.zone/2018/10/28/zoneminder-Object-Injection-2/ (Third Party Advisory)
github.com/ZoneMinder/zoneminder/issues/2272 (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-1000833?: CVE-2018-1000833 is a critical-severity vulnerability in Zoneminder, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2018-12-20.
How severe is CVE-2018-1000833?: Critical severity. CVSS v3 base score is 9.8 out of 10.