CVE-2007-2491 — The PIIX4 power management subsystem in EMC VMware Workstation 5.5.3.34685 and VMware Server 1.0.1.29996 allows local users to write to arbitrary memory locations via a crafted poke to I/O port 0x1004, triggering a denial of service (virtual machine crash) or other unspecified impact, a related issue to CVE-2007-1337

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HIGH

The PIIX4 power management subsystem in EMC VMware Workstation 5.5.3.34685 and VMware Server 1.0.1.29996 allows local users to write to arbitrary memory locations via a crafted poke to I/O port 0x1004, triggering a denial of service (virtual machine crash) or other unspecified impact, a related issue to CVE-2007-1337

Published May 4, 2007

7.2

HIGH

CVSS 2.0

EPSS 0.30%

Description

The PIIX4 power management subsystem in EMC VMware Workstation 5.5.3.34685 and VMware Server 1.0.1.29996 allows local users to write to arbitrary memory locations via a crafted poke to I/O port 0x1004, triggering a denial of service (virtual machine crash) or other unspecified impact, a related issue to CVE-2007-1337.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.30% 0.00301

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00301

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.30% (0.00301)	20.63th	v5 (v2026.06.15)
Jun 15, 2026	0.30% (0.00301)	21.51th	v5 (v2026.06.15)
Mar 17, 2025	0.03% (0.00034)	6.43th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00042)	5.07th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00890)	30.33th	v2 (v2022.01.01)
Sep 10, 2022	0.89% (0.00890)	28.64th	v2 (v2022.01.01)
Apr 1, 2022	0.89% (0.00890)	26.62th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00890)	12.04th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (3)

http://osvdb.org/40088
vdb-entryx_refsource_OSVDB
http://taviso.decsystem.org/virtsec.pdf
x_refsource_MISC
http://www.vupen.com/english/advisories/2007/1592
vdb-entryx_refsource_VUPEN

Link	Providers	Tags
http://osvdb.org/40088		vdb-entryx_refsource_OSVDB
http://taviso.decsystem.org/virtsec.pdf		x_refsource_MISC
http://www.vupen.com/english/advisories/2007/1592		vdb-entryx_refsource_VUPEN

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published May 4, 2007

Updated Aug 7, 2024

Reserved May 3, 2007

Link CVE-2007-2491

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2007-2491

Red Hat

Severity n/a

Public date n/a

Links CVE-2007-2491