CVE-2013-1661

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-09-04 · updated 2026-06-16
Weakness: CWE-20

Description

VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network File Copy (NFC) protocol, which allows man-in-the-middle attackers to cause a denial of service (unhandled exception and application crash) by modifying the client-server data stream.

Affected products

VMware ESX: 4.0, 4.1 (and their updates)
VMware ESXi: 4.0-1, 4.0-2, 4.0-3, 4.0-4, 4.1-1, 4.1-2 (+2); 4.0, 4.1, 5.0, 5.1 (and their updates)

References

http://www.vmware.com/security/advisories/VMSA-2013-0011.html
http://www.vmware.com/security/advisories/VMSA-2013-0011.html

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