CVE-2025-7673

Description

A buffer overflow vulnerability in the URL parser of the zhttpd web server in Zyxel VMG8825-T50K firmware versions prior to V5.50(ABOM.5)C0 could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and potentially execute arbitrary code by sending a specially crafted HTTP request.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.73% Top 30%
Vendor Advisory zyxel.com
Affected: Zyxel VMG8825-T50K firmware
Published at:
Updated at:

References

Link Tags
https://www.zyxel.com/service-provider/global/en/zyxel-security-advisory-remote-code-execution-and-denial-service-vulnerabilities-cpe vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-7673?
CVE-2025-7673 has been scored as a critical severity vulnerability.
How to fix CVE-2025-7673?
To fix CVE-2025-7673, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-7673 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-7673 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-7673?
CVE-2025-7673 affects Zyxel VMG8825-T50K firmware.
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