UnratedActively exploitedPublic exploit

Cisco IOS and IOS XE Remote Code Execution Vulnerability

CVE-2017-3881

Attackers are using this one right now. CISA added it to its Known Exploited Vulnerabilities list on 25 Mar 2022, and US federal agencies had to fix it by 15 Apr 2022. Treat it as urgent.

How serious is it

  • Severity: not rated yet.
  • No exploit prediction (EPSS) score yet.
  • Confirmed exploited in the wild (CISA KEV).
  • Public exploit code exists: EDB-42122, EDB-41872.

Is your app affected by CVE-2017-3881?

Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.

Who is affected

  • Cisco IOS and IOS XE

How to check

  1. Find out whether you run the affected product and which version, then compare it with the versions above.

How to fix

Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
  1. Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
  2. If a vulnerable version was live, check your logs and rotate the secrets that server could read.

The advisory

A vulnerability in the Cisco Cluster Management Protocol (CMP) processing code in Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device or remotely execute code with elevated privileges.

Check your whole app

Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.

References

  • No references listed.

Merged from CISA KEV, Exploit-DB. Last updated 24 Oct 2026. All vulnerabilities · RSS · JSON

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