CVE-2017-6627
Actively exploited. CVE-2017-6627 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.
A vulnerability in the UDP processing code of Cisco IOS and IOS XE could allow an unauthenticated, remote attacker to cause the input queue of an affected system to hold UDP packets, causing an interface queue wedge and denial of service.
CSIRTS triage
- What
- A vulnerability in UDP processing could allow an unauthenticated remote attacker to cause a denial of service.
- Who is affected
- Users of Cisco IOS and IOS XE Software are affected.
- Urgency
- Remediation is urgent due to active exploitation and critical severity.
- Action
- Apply the latest updates for Cisco IOS and IOS XE Software.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 93% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2017-6627: Cisco IOS Software and Cisco IOS XE Software UDP Packet Processing Denial-of-Service Vulnerabil…cisa-kev · 2022-03-03
External references
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