VMware ESXi 4.0 through 5.1, and ESX 4.0 and 4.1, does not properly implement the Network…
Priority LOW 22CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.01105 66th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esx:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.0:*:*:*:*:*:*:* | 4.0 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.0:1:*:*:*:*:*:* | 4.0 1 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.0:2:*:*:*:*:*:* | 4.0 2 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.0:3:*:*:*:*:*:* | 4.0 3 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.0:4:*:*:*:*:*:* | 4.0 4 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.1:*:*:*:*:*:*:* | 4.1 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.1:1:*:*:*:*:*:* | 4.1 1 | Vulnerable | VMware |
| cpe:2.3:o:vmware:esxi:4.1:2:*:*:*:*:*:* | 4.1 2 | Vulnerable | VMware |
- cpe:2.3:o:vmware:esx:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·VMware
- cpe:2.3:o:vmware:esx:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.0:1:*:*:*:*:*:* Versions 4.0 1 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.0:2:*:*:*:*:*:* Versions 4.0 2 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.0:3:*:*:*:*:*:* Versions 4.0 3 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.0:4:*:*:*:*:*:* Versions 4.0 4 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.1:*:*:*:*:*:*:* Versions 4.1 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.1:1:*:*:*:*:*:* Versions 4.1 1 Vulnerable ·VMware
- cpe:2.3:o:vmware:esxi:4.1:2:*:*:*:*:*:* Versions 4.1 2 Vulnerable ·VMware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2013-1661
- 2026-10-03 Alias added: GHSA-x84p-w2wx-9hf2
References
More VMware Esx vulnerabilities
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2009-03557 Directory traversal vulnerability in VMware Server 1.x before 1.0.10 build 203137 and 2.x… CVSS 2.0MEDIUM 5.0
- TI-2007-00059 Integer underflow in the DHCP server in EMC VMware Workstation before 5.5.5 Build 56455… CVSS 2.0HIGH 10.0
- TI-2010-02816 The xfs implementation in the Linux kernel before 2.6.35 does not look up inode… CVSS 3.1HIGH 8.1
- TI-2007-00057 The DHCP server in EMC VMware Workstation before 5.5.5 Build 56455 and 6.x before 6.0.1… CVSS 2.0HIGH 10.0
Sources
- CVE-2013-1661 · CVE Program
- CVE-2013-1661 · NVD
- FIRST EPSS
- GHSA-x84p-w2wx-9hf2 · GitHub Advisory Database · CC BY 4.0
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