How severe is CVE-2013-5556?

CVE-2013-5556 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2013-5556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-5556?

CVE-2013-5556 primarily affects Cisco Nexus 1000v. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-5556?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-5556 published?

CVE-2013-5556 was published on 2013-11-18 and last updated on 2026-06-16.

CVE-2013-5556

CVE-2013-5556 is a medium-severity vulnerability in Cisco Nexus 1000v with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Nexus 1000v
Published: 2013-11-18
Last modified: 2026-06-16

Description

The license-installation module on the Cisco Nexus 1000V switch 4.2(1)SV1(5.2b) and earlier for VMware vSphere, Cisco Nexus 1000V switch 5.2(1)SM1(5.1) for Microsoft Hyper-V, and Cisco Virtual Security Gateway 4.2(1)VSG1(1) for Nexus 1000V switches allows local users to gain privileges and execute arbitrary commands via crafted "install all iso" arguments, aka Bug ID CSCui21340.

Frequently asked questions

What is CVE-2013-5556?: The license-installation module on the Cisco Nexus 1000V switch 4.2(1)SV1(5.2b) and earlier for VMware vSphere, Cisco Nexus 1000V switch 5.2(1)SM1(5.1) for Microsoft Hyper-V, and Cisco Virtual Security Gateway 4.2(1)VSG1(1) for Nexus 1000V switches allows local users to gain privileges and execute arbitrary commands via crafted "install all iso" arguments, aka Bug ID CSCui21340.
How severe is CVE-2013-5556?: CVE-2013-5556 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2013-5556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-5556?: CVE-2013-5556 primarily affects Cisco Nexus 1000v. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-5556?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-5556 published?: CVE-2013-5556 was published on 2013-11-18 and last updated on 2026-06-16.

References

Affected products (9)

cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)vsg1\(1\):-:*:*:*:nexus_1000v:*:*
cpe:2.3:h:cisco:nexus_1000v:5.2\(1\)sm1\(5.1\):-:*:*:*:microsoft_hyper-v:*:*
cpe:2.3:h:cisco:nexus_1000v:*:-:*:*:*:vmware_vsphere:*:*
cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)_sv1\(4\):-:*:*:*:vmware_vsphere:*:*
cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)_sv1\(4a\):-:*:*:*:vmware_vsphere:*:*
cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)_sv1\(4b\):-:*:*:*:vmware_vsphere:*:*
cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)sv1\(5.1\):-:*:*:*:vmware_vsphere:*:*
cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)sv1\(5.1a\):-:*:*:*:vmware_vsphere:*:*
cpe:2.3:h:cisco:nexus_1000v:4.2\(1\)sv1\(5.2\):-:*:*:*:vmware_vsphere:*:*

More vulnerabilities in Cisco Nexus 1000v

CVE-2013-1178 — High (CVSS 8.3): Multiple buffer overflows in the Cisco Discovery Protocol (CDP) implementation in Cisco NX-OS on Nexus 7000 devices 4.x…
CVE-2012-0352 — High (CVSS 7.8): Cisco NX-OS 4.2.x before 4.2(1)SV1(5.1) on Nexus 1000v series switches; 4.x and 5.0.x before 5.0(2)N1(1) on Nexus 5000…
CVE-2013-3400 — Medium (CVSS 6.8): The license-installation module in Cisco NX-OS on Nexus 1000V devices allows local users to execute arbitrary commands…
CVE-2013-1212 — Medium (CVSS 5.8): The SSL functionality in Cisco NX-OS on the Nexus 1000V does not properly verify X.509 certificates, which allows…
CVE-2015-0775 — Medium (CVSS 5.0): The banner (aka MOTD) implementation in Cisco NX-OS 4.1(2)E1(1f) on Nexus 4000 devices, 5.2(1)SV3(2.1) on Nexus 1000V…
CVE-2013-1213 — Medium (CVSS 5.0): Cisco NX-OS on the Nexus 1000V does not assign the proper priority to heartbeat messages from a Virtual Ethernet Module…

All CVEs affecting Cisco Nexus 1000v →

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CVE-2016-7457 — Critical (CVSS 10.0): VMware vRealize Operations (aka vROps) 6.x before 6.4.0 allows remote authenticated users to gain privileges, or halt…
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