How severe is CVE-2009-4811?

CVE-2009-4811 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2009-4811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4811?

CVE-2009-4811 primarily affects Vmware Ace. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4811?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-4811 published?

CVE-2009-4811 was published on 2010-04-27 and last updated on 2026-06-16.

CVE-2009-4811

CVE-2009-4811 is a medium-severity vulnerability in Vmware Ace with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-134.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-134
Affected product: Vmware Ace
Published: 2010-04-27
Last modified: 2026-06-16

Description

VMware Authentication Daemon 1.0 in vmware-authd.exe in the VMware Authorization Service in VMware Workstation 7.0 before 7.0.1 build 227600 and 6.5.x before 6.5.4 build 246459, VMware Player 3.0 before 3.0.1 build 227600 and 2.5.x before 2.5.4 build 246459, VMware ACE 2.6 before 2.6.1 build 227600 and 2.5.x before 2.5.4 build 246459, and VMware Server 2.x allows remote attackers to cause a denial of service (process crash) via a \x25\x90 sequence in the USER and PASS commands, a related issue to CVE-2009-3707. NOTE: some of these details are obtained from third party information.

Frequently asked questions

What is CVE-2009-4811?: VMware Authentication Daemon 1.0 in vmware-authd.exe in the VMware Authorization Service in VMware Workstation 7.0 before 7.0.1 build 227600 and 6.5.x before 6.5.4 build 246459, VMware Player 3.0 before 3.0.1 build 227600 and 2.5.x before 2.5.4 build 246459, VMware ACE 2.6 before 2.6.1 build 227600 and 2.5.x before 2.5.4 build 246459, and VMware Server 2.x allows remote attackers to cause a denial of service (process crash) via a \x25\x90 sequence in the USER and PASS commands, a related issue to CVE-2009-3707. NOTE: some of these details are obtained from third party information.
How severe is CVE-2009-4811?: CVE-2009-4811 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2009-4811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4811?: CVE-2009-4811 primarily affects Vmware Ace. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-4811 published?: CVE-2009-4811 was published on 2010-04-27 and last updated on 2026-06-16.

References

Affected products (24)

cpe:2.3:a:vmware:ace:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:ace:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:ace:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:vmware:ace:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:vmware:ace:2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:vmware:ace:2.6:*:*:*:*:*:*:*
cpe:2.3:a:vmware:ace:2.6.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:2.5:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:3.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:player:3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:server:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:server:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:server:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:6.5.2:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:6.5.3:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:6.5.4:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:7.0:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:7.0.1:*:*:*:*:*:*:*

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