Phishing via untrusted HTTP Host header
Published Mar 13, 2025 · Updated Feb 13, 2026
Open redirect in Dell NetWorker Management Console before 19.11.0.4 and 19.12 before 19.12.0.1 allows remote attackers to redirect users. The console accepts an untrusted HTTP Host header when forming the redirect destination; Dell has not identified the affected handler or request path. Exploitation requires a targeted user to follow the crafted request, enabling phishing and disclosure only if that user submits sensitive information.
Summary
What happened
Open redirect in Dell NetWorker Management Console before 19.11.0.4 and 19.12 before 19.12.0.1 allows remote attackers to redirect users. The console accepts an untrusted HTTP Host header when forming the redirect destination; Dell has not identified the affected handler or request path. Exploitation requires a targeted user to follow the crafted request, enabling phishing and disclosure only if that user submits sensitive information.
The record
- CVE
- CVE-2025-21104
- Published
- Mar 13, 2025
- Updated
- Feb 13, 2026
- Vendor
- Dell Technologies
- Product
- NetWorker
- Classifications
- CWE-601, CAPEC-178, T1566.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 13, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=19.12 <19.12.0.1
- Affected versionversion=N/A <19.11.0.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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