CVE-2018-0102
A vulnerability in the Pong tool of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software attempts to free the same area of memory twice. An attacker could exploit this vulnerability by sending a pong request to an affected device from a location on the network that causes the pong reply packet to egress both a FabricPath port and a non-FabricPath port. An exploit could allow the attacker to cause a dual or quad supervisor virtual port-channel (vPC) to reload. This vulnerability affects the following products when running Cisco NX-OS Software Release 7.2(1)D(1), 7.2(2)D1(1), or 7.2(2)D1(2) with both the Pong and FabricPath features enabled and the FabricPath port is actively monitored via a SPAN session: Cisco Nexus 7000 Series Switches and Cisco Nexus 7700 Series Switches. Cisco Bug IDs: CSCuv98660.
Key facts
- CVSS score
- 7.4 (v3.0)
- Severity
- HIGH
- CVSS vector
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H- Weakness (CWE)
- CWE-399
- EPSS score
- 0.8% (55th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2018-0926)
- Published
- January 18, 2018
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2018-0926 in the EU Vulnerability Database. Last updated in EUVD on December 2, 2024.
View on the EU Vulnerability DatabaseAffected products
- cisco / nx-os
- cisco / nx-os
- cisco / nx-os
Certified products that may be affected
1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.
- Cisco Nexus 5600 Series Switches with 2000 Series Fabric Extenders running NX-OS 7.2(1)N1(1) - Cisco Systems, Inc. - Common Criteria NSCIB-CC-15-77333-CR - archived
References
- http://www.securityfocus.com/bid/102728(Third Party Advisory, VDB Entry)
- http://www.securitytracker.com/id/1040219(Third Party Advisory, VDB Entry)
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180117-nx-os(Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
Query CVEs from your AI assistant
The CVE/NVD Explorer brain answers CVE questions directly inside Claude, ChatGPT, or any MCP assistant — always up to date, no setup. Add it once and stop pasting advisories into chat.
Add the CVE brain