CVE-2015-6277

6.1 MEDIUM 0.9% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited from the same network segment without logging in. High risk of service disruption.
Exploit odds: 0.9% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2015-09-02 16:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 00:30 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.9% in the next 30 days (EPSS).
Severity: 6.1 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2015-09-02 16:59 UTC
Last modified: 2026-06-17 00:30 UTC
Exploit probability: 0.9% · EPSS, next 30 days
Weakness: CWE-399
Record status: Modified

Affected

Cisco nx-os 7.3\(0\)zd\(0.47\)
Cisco nx-os 4.1\(2\)e1
Cisco nx-os 7.0\(0\)hsk\(0.353\)
Cisco san-os 7.0\(0\)hsk\(0.353\)
Cisco Mds 9000
Cisco nx-os 7.3\(0\)zd\(0.61\)
Cisco 1000v 5.2\(1\)sv3\(1.4\)

Attack profile CVSS 2.0 · 6.1

Attack vector: Adjacent network
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: None
Availability: Complete

Raw vector

AV:A/AC:L/Au:N/C:N/I:N/A:C

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record