How severe is CVE-2015-6277?

CVE-2015-6277 has a CVSS 2.0 base score of 6.1, rated medium severity.

Is CVE-2015-6277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6277?

CVE-2015-6277 primarily affects Cisco Nx-os. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-6277?

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

When was CVE-2015-6277 published?

CVE-2015-6277 was published on 2015-09-02 and last updated on 2026-06-17.

CVE-2015-6277

CVE-2015-6277 is a medium-severity vulnerability in Cisco Nx-os with a CVSS 2.0 base score of 6.1. 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-399.

Key facts

Severity: Medium (CVSS 2.0 base score 6.1)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Nx-os
Published: 2015-09-02
Last modified: 2026-06-17

Description

The ARP implementation in Cisco NX-OS on Nexus 1000V devices for VMware vSphere 5.2(1)SV3(1.4), Nexus 3000 devices 7.3(0)ZD(0.47), Nexus 4000 devices 4.1(2)E1, Nexus 9000 devices 7.3(0)ZD(0.61), and MDS 9000 devices 7.0(0)HSK(0.353) and SAN-OS NX-OS on MDS 9000 devices 7.0(0)HSK(0.353) allows remote attackers to cause a denial of service (ARP process restart) via crafted packet-header fields, aka Bug ID CSCut25292.

Frequently asked questions

What is CVE-2015-6277?: The ARP implementation in Cisco NX-OS on Nexus 1000V devices for VMware vSphere 5.2(1)SV3(1.4), Nexus 3000 devices 7.3(0)ZD(0.47), Nexus 4000 devices 4.1(2)E1, Nexus 9000 devices 7.3(0)ZD(0.61), and MDS 9000 devices 7.0(0)HSK(0.353) and SAN-OS NX-OS on MDS 9000 devices 7.0(0)HSK(0.353) allows remote attackers to cause a denial of service (ARP process restart) via crafted packet-header fields, aka Bug ID CSCut25292.
How severe is CVE-2015-6277?: CVE-2015-6277 has a CVSS 2.0 base score of 6.1, rated medium severity.
Is CVE-2015-6277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6277?: CVE-2015-6277 primarily affects Cisco Nx-os. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-6277?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-6277 published?: CVE-2015-6277 was published on 2015-09-02 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:cisco:nx-os:7.3\(0\)zd\(0.47\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:4.1\(2\)e1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:7.0\(0\)hsk\(0.353\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:san-os:7.0\(0\)hsk\(0.353\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:mds_9000:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:7.3\(0\)zd\(0.61\):*:*:*:*:*:*:*
cpe:2.3:a:cisco:1000v:5.2\(1\)sv3\(1.4\):-:*:*:*:vmware_vsphere:*:*

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Other CWE-399 (Resource Management Errors) vulnerabilities

CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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