Credential theft via trusted Host header
Published Jan 26, 2026 · Updated Jan 26, 2026
Host-header injection in Altitude Communication Server 8.5.3290.0 allows remote attackers to redirect clients to arbitrary URLs. Host-header processing trusts the attacker-controlled value when constructing redirects or the authentication service's base URL. Exploitation requires active victim interaction, and credential disclosure occurs only if a redirected victim submits login data to the malicious site.
Summary
What happened
Host-header injection in Altitude Communication Server 8.5.3290.0 allows remote attackers to redirect clients to arbitrary URLs. Host-header processing trusts the attacker-controlled value when constructing redirects or the authentication service's base URL. Exploitation requires active victim interaction, and credential disclosure occurs only if a redirected victim submits login data to the malicious site.
The record
- CVE
- CVE-2025-41083
- Published
- Jan 26, 2026
- Updated
- Jan 26, 2026
- Vendor
- Altitude Software
- Product
- Altitude Communication Server
- Classifications
- CWE-74, T1056.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 26, 2026CVE publishedPublication date reported by the CVE source.
- Jan 26, 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?
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- Affected versionversion=8.5.3290.0
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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