CVE-2007-0063

CVE-2007-0063 is a critical-severity vulnerability in Vmware Ace with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-191.

Key facts

• Severity: Critical (CVSS 2.0 base score 10.0)
• EPSS exploit prediction: 20% (97th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-191
• Affected product: Vmware Ace
• Published: 2007-09-21
• Last modified: 2026-06-16

Description

Integer underflow in the DHCP server in EMC VMware Workstation before 5.5.5 Build 56455 and 6.x before 6.0.1 Build 55017, Player before 1.0.5 Build 56455 and Player 2 before 2.0.1 Build 55017, ACE before 1.0.3 Build 54075 and ACE 2 before 2.0.1 Build 55017, and Server before 1.0.4 Build 56528 allows remote attackers to execute arbitrary code via a malformed DHCP packet that triggers a stack-based buffer overflow.

Frequently asked questions

What is CVE-2007-0063?

Integer underflow in the DHCP server in EMC VMware Workstation before 5.5.5 Build 56455 and 6.x before 6.0.1 Build 55017, Player before 1.0.5 Build 56455 and Player 2 before 2.0.1 Build 55017, ACE before 1.0.3 Build 54075 and ACE 2 before 2.0.1 Build 55017, and Server before 1.0.4 Build 56528 allows remote attackers to execute arbitrary code via a malformed DHCP packet that triggers a stack-based buffer overflow.

How severe is CVE-2007-0063?

CVE-2007-0063 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2007-0063 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2007-0063?

CVE-2007-0063 primarily affects Vmware Ace. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2007-0063?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2007-0063 published?

CVE-2007-0063 was published on 2007-09-21 and last updated on 2026-06-16.

References

• http://lists.grok.org.uk/pipermail/full-disclosure/2007-September/065902.html
• http://secunia.com/advisories/26890
• http://secunia.com/advisories/27694
• http://secunia.com/advisories/27706
• http://security.gentoo.org/glsa/glsa-200711-23.xml
• http://www.iss.net/threats/275.html
• http://www.securityfocus.com/bid/25729
• http://www.securitytracker.com/id?1018717
• http://www.ubuntu.com/usn/usn-543-1
• http://www.vmware.com/support/ace/doc/releasenotes_ace.html
• http://www.vmware.com/support/ace2/doc/releasenotes_ace2.html
• http://www.vmware.com/support/player/doc/releasenotes_player.html
• http://www.vmware.com/support/player2/doc/releasenotes_player2.html
• http://www.vmware.com/support/server/doc/releasenotes_server.html
• http://www.vmware.com/support/ws55/doc/releasenotes_ws55.html
• http://www.vmware.com/support/ws6/doc/releasenotes_ws6.html
• http://www.vupen.com/english/advisories/2007/3229
• https://exchange.xforce.ibmcloud.com/vulnerabilities/33103

Affected products (13)

• cpe:2.3:a:vmware:ace:*:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:player:*:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:server:*:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:workstation:*:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:2.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:2.1.3:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:2.5.3:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:2.5.4:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:3.0.0:*:*:*:*:*:*:*
• cpe:2.3:o:vmware:esx:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:lts:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:6.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu_linux:7.04:*:*:*:*:*:*:*

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