CVE-2025-48952

Description

NetAlertX is a network, presence scanner, and alert framework. Prior to version 25.6.7, a vulnerability in the authentication logic allows users to bypass password verification using SHA-256 magic hashes, due to loose comparison in PHP. In vulnerable versions of the application, a password comparison is performed using the `==` operator at line 40 in front/index.php. This introduces a security issue where specially crafted "magic hash" values that evaluate to true in a loose comparison can bypass authentication. Because of the use of `==` instead of the strict `===`, different strings that begin with 0e and are followed by only digits can be interpreted as scientific notation (i.e., zero) and treated as equal. This issue falls under the Login Bypass vulnerability class. Users with certain "weird" passwords that produce magic hashes are particularly affected. Services relying on this logic are at risk of unauthorized access. Version 25.6.7 fixes the vulnerability.

CVSS v3.1 Score

9.4

CRITICAL

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

Weakness Type (CWE)

CWE-697 CWE-697

Affected Products

Vendor	Product	Versions
netalertx	netalertx	< 25.6.7

References

Advisories & Patches

https://github.com/jokob-sk/NetAlertX/security/advisories/GHSA-4p4p-vq2v-9489 https://github.com/jokob-sk/NetAlertX/security/advisories/GHSA-4p4p-vq2v-9489

Exploits

https://github.com/jokob-sk/NetAlertX/security/advisories/GHSA-4p4p-vq2v-9489 https://github.com/jokob-sk/NetAlertX/security/advisories/GHSA-4p4p-vq2v-9489

Frequently Asked Questions

What is CVE-2025-48952? +

NetAlertX is a network, presence scanner, and alert framework. Prior to version 25.6.7, a vulnerability in the authentication logic allows users to bypass password verification using SHA-256 magic hashes, due to loose comparison in PHP. In vulnerable versions of the application, a password comparison is performed using the `==` operator at line 40 in front/index.php. This introduces a security issue where specially crafted "magic hash" values that evaluate to true in a loose comparison can bypass authentication. Because of the use of `==` instead of the strict `===`, different strings that begin with 0e and are followed by only digits can be interpreted as scientific notation (i.e., zero) and treated as equal. This issue falls under the Login Bypass vulnerability class. Users with certain "weird" passwords that produce magic hashes are particularly affected. Services relying on this logic are at risk of unauthorized access. Version 25.6.7 fixes the vulnerability. It has a CVSS v3.1 base score of 9.4 (CRITICAL).

How severe is CVE-2025-48952? +

CVE-2025-48952 has a CVSS v3.1 score of 9.4 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-48952? +

CVE-2025-48952 affects products from netalertx, specifically: netalertx. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-48952? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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