CVE-2013-1661

mediumpriority · track · 17EPSS 0.011 · 66 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.10% (66th) EPSS

CVSS 4.3 · medium

Is it mine?

7 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

4.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.7–4.3

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v2.03.7lowAV:N/AC:M/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (7)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
vmware esx= 4.0nvdUScpe:2.3:o:vmware:esx:*:*:*:*:*:*:*:*
vmware esx= 4.1nvdUScpe:2.3:o:vmware:esx:*:*:*:*:*:*:*:*
vmware esxi= 4.0nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*
vmware esxi= 4.1nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*
vmware esxi= 5.0nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*
vmware esxi= 5.1nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2013-09-04modified 2026-06-16

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+25194 more

references (4)

External citations — patches, advisories, analysis.

scry

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