How severe is CVE-2012-4076?

CVE-2012-4076 has a CVSS 2.0 base score of 6.8, rated medium severity.

Is CVE-2012-4076 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-4076?

CVE-2012-4076 affects Cisco Nx-os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-4076?

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

When was CVE-2012-4076 published?

CVE-2012-4076 was published on 2013-10-14 and last updated on 2026-06-16.

CVE-2012-4076

CVE-2012-4076 is a medium-severity vulnerability in Cisco Nx-os 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 6.8)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Nx-os
Published: 2013-10-14
Last modified: 2026-06-16

Description

Cisco NX-OS allows local users to gain privileges and execute arbitrary commands via shell metacharacters in a command that calls the system library function, aka Bug IDs CSCtf23559 and CSCtf27780.

Frequently asked questions

What is CVE-2012-4076?: Cisco NX-OS allows local users to gain privileges and execute arbitrary commands via shell metacharacters in a command that calls the system library function, aka Bug IDs CSCtf23559 and CSCtf27780.
How severe is CVE-2012-4076?: CVE-2012-4076 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2012-4076 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-4076?: CVE-2012-4076 affects Cisco Nx-os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-4076?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-4076 published?: CVE-2012-4076 was published on 2013-10-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*

More vulnerabilities in Cisco Nx-os

CVE-2021-1361 — Critical (CVSS 9.8): A vulnerability in the implementation of an internal file management service for Cisco Nexus 3000 Series Switches and…
CVE-2018-0310 — Critical (CVSS 9.8): A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an…
CVE-2018-0301 — Critical (CVSS 9.8): A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an unauthenticated, remote attacker to craft…
CVE-2016-1453 — Critical (CVSS 9.8): Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000…
CVE-2016-1341 — Critical (CVSS 9.8): Cisco NX-OS 7.0(1)N1(1), 7.0(1)N1(3), and 7.0(4)N1(1) on Nexus 2000 Fabric Extender devices has a blank root password,…
CVE-2015-4235 — Critical (CVSS 9.0): Cisco Application Policy Infrastructure Controller (APIC) devices with software before 1.0(3o) and 1.1 before 1.1(1j)…

All CVEs affecting Cisco Nx-os →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →