What’s Vulnerable › Vulnerabilities

CVE-2017-3878

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-03-17 · updated 2026-06-17
• Weakness: CWE-119

Description

A Denial of Service vulnerability in the Telnet remote login functionality of Cisco NX-OS Software running on Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause a Telnet process used for login to terminate unexpectedly and the login attempt to fail. There is no impact to user traffic flowing through the device. Affected Products: This vulnerability affects Cisco Nexus 9000 Series Switches that are running Cisco NX-OS Software and are configured to allow remote Telnet connections to the device. More Information: CSCux46778. Known Affected Releases: 7.0(3)I3(0.170). Known Fixed Releases: 7.0(3)I3(1) 7.0(3)I3(0.257) 7.0(3)I3(0.255) 7.0(3)I2(2e) 7.0(3)F1(1.22) 7.0(3)F1(1).

Affected products

• Cisco NX-OS: 7.0(3)i3(0.170)

References

• http://www.securityfocus.com/bid/96927
• http://www.securitytracker.com/id/1038047
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-nss
• http://www.securityfocus.com/bid/96927
• http://www.securitytracker.com/id/1038047
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170315-nss

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