CVE-2017-6666

Severity: medium (CVSS 6.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-06-13 · updated 2026-06-17

Description

A vulnerability in the forwarding component of Cisco IOS XR Software for Cisco Network Convergence System (NCS) 5500 Series Routers could allow an authenticated, local attacker to cause the router to stop forwarding data traffic across Traffic Engineering (TE) tunnels, resulting in a denial of service (DoS) condition. More Information: CSCvd16665. Known Affected Releases: 6.2.11.BASE. Known Fixed Releases: 6.1.3 6.1.2 6.3.1.8i.BASE 6.2.11.8i.BASE 6.2.2.9i.BASE 6.1.32.11i.BASE 6.1.31.10i.BASE 6.1.4.3i.BASE.

Affected products

Cisco IOS XR Software: 6.0.0, 6.0.1, 6.0_base, 6.1.0, 6.1.1, 6.1.2 (+3)

References

http://www.securityfocus.com/bid/98987
http://www.securitytracker.com/id/1038630
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-ncs
http://www.securityfocus.com/bid/98987
http://www.securitytracker.com/id/1038630
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170607-ncs

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