CVE-2020-25730

Cross Site Scripting (XSS) vulnerability in ZoneMinder before version 1.34.21, allows remote...

8.2 HighFix available

Cross Site Scripting (XSS) vulnerability in ZoneMinder before version 1.34.21, allows remote attackers execute arbitrary code, escalate privileges, and obtain sensitive information via PHP_SELF component in classic/views/download.php.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: None

Exploit likelihood

0.63%Up 0.6 points since Apr 4, 2024

What each source reports

CVE List Score used 8.2

Record: CVE-2020-25730
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2020-18383 8.2

Record: EUVD-2020-18383
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vqhg-mqww-h64x 8.2

Cross Site Scripting (XSS) vulnerability in ZoneMinder before version 1.34.21, allows remote...

Record: GHSA-vqhg-mqww-h64x
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 8.2

Record: CVE-2020-25730
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 8.2

Record: CVE-2020-25730
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-25730 8.2

Record: DEBIAN-CVE-2020-25730
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-25730 8.2

Record: UBUNTU-CVE-2020-25730
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Updated: 2026-11-02

Affected products

zoneminder

Affected packages

Affected packages
Package	Affected	Fixed
`zoneminder` Debian:12	before 1.34.21-1	1.34.21-1
`zoneminder` Debian:13	before 1.34.21-1	1.34.21-1
`zoneminder` Debian:14	before 1.34.21-1	1.34.21-1
`zoneminder` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.28.1-81.29.0+dfsg-11.29.0+dfsg-1ubuntu11.29.0+dfsg-1ubuntu21.29.0+dfsg-1ubuntu2+esm1	None known
`zoneminder` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 1.32.3-2build11.32.3-2ubuntu11.32.3-2ubuntu21.32.3-2ubuntu2+esm1	None known
`zoneminder` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 1.36.7+dfsg1-11.36.10+dfsg1-11.36.11+dfsg1-11.36.12+dfsg1-11.36.12+dfsg1-1ubuntu0.1~esm1	None known
`zoneminder` Ubuntu:24.04:LTS	All versions, plus listed versions 1.36.33+dfsg1-1build11.36.33+dfsg1-1build21.36.33+dfsg1-1build31.36.33+dfsg1-1build4	None known
`zoneminder` Ubuntu:25.10	All versions, plus listed versions 1.36.35+dfsg1-1	None known
`zoneminder` Ubuntu:26.10	All versions, plus listed versions 1.36.37+dfsg1-1	None known
`zoneminder` Ubuntu:26.04:LTS	All versions, plus listed versions 1.36.35+dfsg1-11.36.37+dfsg1-1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-25730 is a high vulnerability (CVSS 8.2) in Zoneminder, published April 4, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.63%, the 50th percentile. Fixed in zoneminder 1.34.21-1.