CVE-2025-56266

Name: CVE-2025-56266
Creator: NVD / NIST
Published: 2025-09-08T18:15:33.87+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.70%

Last modified Jun 17, 2026

CVE-2025-56266 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A Host Header Injection vulnerability in Avigilon ACM v7.10.0.20 allows attackers to execute arbitrary code via supplying a crafted URL.. EPSS estimates a 2.70% chance of exploitation in the next 30 days.

Description

A Host Header Injection vulnerability in Avigilon ACM v7.10.0.20 allows attackers to execute arbitrary code via supplying a crafted URL.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.70%

84.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Avigilon	Access Control Manager	7.10.0.20

References

Timeline

Published: Sep 8, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-56266?

A Host Header Injection vulnerability in Avigilon ACM v7.10.0.20 allows attackers to execute arbitrary code via supplying a crafted URL.

How severe is CVE-2025-56266?

CVE-2025-56266 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.70% probability of exploitation in the next 30 days.

How do I fix CVE-2025-56266?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-56266?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST