CVE-2017-12319
Actively exploited. CVE-2017-12319 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 Border Gateway Protocol (BGP) over an Ethernet Virtual Private Network (EVPN) for Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial of service (DoS) condition, or potentially corrupt the BGP routing table, which could result in network instability.
CSIRTS triage
- What
- A vulnerability in BGP over EVPN could allow an unauthenticated attacker to cause a denial of service or network instability.
- Who is affected
- Devices running Cisco IOS XE Software with BGP enabled are affected.
- Urgency
- Immediate action is required due to active exploitation and critical severity.
- Action
- Update to the latest version of Cisco 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 92% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2017-12319: Cisco IOS XE Software Ethernet Virtual Private Network Border Gateway Protocol Denial-of-Servi…cisa-kev · 2022-03-03
External references
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