CVE-2025-41083 Improper Neutralization in Altitude Communication Server
Attackers can manipulate Host headers to redirect users to malicious sites, potentially stealing login credentials from Altitude Communication Server users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-41083?
CVE-2025-41083 is a medium-severity vulnerability in Altitude Communication Server, published on 26 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Vulnerability in Altitude Authentication Service and Altitude Communication Server v8.5.3290.0 by Altitude, where manipulation of Host header in HTTP requests allows redirection to an arbitrary URL or modification of the base URL to trick the victim into sending login credentials to a malicious website. This behavior can be used to redirect clients to endpoints controlled by the attacker.
Weakness: CWE-74
Which versions are affected by CVE-2025-41083?
How do I fix CVE-2025-41083?
No fix has been published for CVE-2025-41083 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-41083 being exploited?
There is no known exploitation of CVE-2025-41083 in the wild and no public exploit code.
Sources
Also known as GHSA-2hff-rr39-hph8.