CVE-2017-12233
Actively exploited. CVE-2017-12233 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.
CSIRTS triage
- What
- A vulnerability in the implementation of the Common Industrial Protocol (CIP) feature could allow an unauthenticated, remote attacker to cause a denial of service.
- Who is affected
- Unauthenticated remote attackers can exploit this vulnerability against Cisco IOS devices.
- Urgency
- Remediation is urgent as the vulnerability is critical and actively exploited.
- Action
- Apply the recommended patches from Cisco.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2017-12233
Get an email if CVE-2017-12233 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 94% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2017-12233: Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerabilitycisa-kev · 2022-03-03
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2017-12233)