What is CVE-2017-12342?

CVE-2017-12342 is a medium-severity vulnerability in Cisco Nx-Os, classified under CWE-264. CVSS score: 6.8/10. Published 2017-11-30.

How severe is CVE-2017-12342?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Cisco Nx-Os

CVE-2017-12342

A vulnerability in the Open Agent Container (OAC) feature of Cisco Nexus Series Switches could allow an unauthenticated, local attacker to read and send packets outside the scope of the OAC. The vulnerability is due to insufficient internal security measures in the OAC feature. An attacker could exploit this vulnerability by crafting specific packets for communication on the device-internal network. A successful exploit could allow the attacker to run code on the underlying host operating system. OAC is not enabled by default. For a device to be vulnerable, an administrator would need to install and activate this feature. This vulnerability affects the following Cisco Nexus Series Switches: Nexus 2000 Series Fabric Extenders, Nexus 5000 Series Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches. Cisco Bug IDs: CSCve53542, CSCvf36621.

Published 2017-11-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (29.7th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Cisco Nx-Os — versions 8.1(1), 7.0\(0\)hsk\(0.357\), 7.0(0)hsk(0.357)
Cisco Nexus Series Switches — versions Cisco Nexus Series Switches

Weakness classification (CWE)

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171129… (Vendor Advisory)
www.securityfocus.com/bid/102027 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1039940 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-12342?: CVE-2017-12342 is a medium-severity vulnerability in Cisco Nx-Os, classified under CWE-264. CVSS score: 6.8/10. Published 2017-11-30.
How severe is CVE-2017-12342?: Medium severity. CVSS v3 base score is 6.8 out of 10.