CVE-2025-21104: networker Open Redirect — Fix

Description

Dell NetWorker, versions prior to 19.11.0.4 and version 19.12, contains an URL Redirection to Untrusted Site ('Open Redirect') Vulnerability in NetWorker Management Console. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to a targeted application user being redirected to arbitrary web URLs. The vulnerability could be leveraged by attackers to conduct phishing attacks that cause users to divulge sensitive information.

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CVSS v3.1 Score

4.3

MEDIUM

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

Weakness Type (CWE)

CWE-601 CWE-601

Affected Products

Vendor	Product	Versions
dell	networker	< 19.11.0.4
dell	networker	All

References

Advisories & Patches

https://www.dell.com/support/kbdoc/en-us/000294392/dsa-2025-124-security-update-for-dell-networker-management-console-for-http-host-header-injection-vulnerability

Frequently Asked Questions

What is CVE-2025-21104? +

Dell NetWorker, versions prior to 19.11.0.4 and version 19.12, contains an URL Redirection to Untrusted Site ('Open Redirect') Vulnerability in NetWorker Management Console. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to a targeted application user being redirected to arbitrary web URLs. The vulnerability could be leveraged by attackers to conduct phishing attacks that cause users to divulge sensitive information. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-21104? +

CVE-2025-21104 has a CVSS v3.1 score of 4.3 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-2025-21104? +

CVE-2025-21104 affects products from dell, specifically: networker. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-21104? +

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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