CVE-2025-56676: zender (CVSS 5.4)

Description

TitanSystems Zender v3.9.7 contains an account takeover vulnerability in its password reset functionality. A temporary password or reset token issued to one user can be used to log in as another user, due to improper validation of token-user linkage. This allows remote attackers to gain unauthorized access to any user account by exploiting the password reset mechanism. The vulnerability occurs because the reset token is not correctly bound to the requesting account and is accepted for other user emails during login, enabling privilege escalation and information disclosure.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-1259 CWE-1259

Affected Products

Vendor	Product	Versions
titansystems	zender	All

References

Other References

https://codecanyon.net/item/zender-android-mobile-devices-as-sms-gateway-saas-platform/26594230 https://darklotus.medium.com/cve-2025-56676-critical-vulnerability-in-zender-gateway-allows-account-takeover-2b5bcb50c762 https://previews.titansystems.ph/zender/dashboard/auth

Frequently Asked Questions

What is CVE-2025-56676? +

TitanSystems Zender v3.9.7 contains an account takeover vulnerability in its password reset functionality. A temporary password or reset token issued to one user can be used to log in as another user, due to improper validation of token-user linkage. This allows remote attackers to gain unauthorized access to any user account by exploiting the password reset mechanism. The vulnerability occurs because the reset token is not correctly bound to the requesting account and is accepted for other user emails during login, enabling privilege escalation and information disclosure. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-56676? +

CVE-2025-56676 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-56676? +

CVE-2025-56676 affects products from titansystems, specifically: zender. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-56676? +

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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