How severe is CVE-2009-2277?

CVE-2009-2277 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-2277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2277?

CVE-2009-2277 primarily affects Vmware Esx Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2277?

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

When was CVE-2009-2277 published?

CVE-2009-2277 was published on 2010-04-01 and last updated on 2026-06-16.

CVE-2009-2277

CVE-2009-2277 is a medium-severity vulnerability in Vmware Esx Server with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Vmware Esx Server
Published: 2010-04-01
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in WebAccess in VMware VirtualCenter 2.0.2 and 2.5 and VMware ESX 3.0.3 and 3.5 allows remote attackers to inject arbitrary web script or HTML via vectors related to "context data."

Frequently asked questions

What is CVE-2009-2277?: Cross-site scripting (XSS) vulnerability in WebAccess in VMware VirtualCenter 2.0.2 and 2.5 and VMware ESX 3.0.3 and 3.5 allows remote attackers to inject arbitrary web script or HTML via vectors related to "context data."
How severe is CVE-2009-2277?: CVE-2009-2277 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-2277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2277?: CVE-2009-2277 primarily affects Vmware Esx Server. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2277?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2277 published?: CVE-2009-2277 was published on 2010-04-01 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:vmware:esx_server:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:vmware:esx_server:3.5:*:*:*:*:*:*:*
cpe:2.3:a:vmware:virtualcenter:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:vmware:virtualcenter:2.5:*:*:*:*:*:*:*

More vulnerabilities in Vmware Esx Server

CVE-2010-0686 — High (CVSS 7.5): WebAccess in VMware VirtualCenter 2.0.2 and 2.5, VMware Server 2.0, and VMware ESX 3.0.3 and 3.5 allows remote…
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CVE-2007-1270 — Medium (CVSS 5.0): Double free vulnerability in VMware ESX Server 3.0.0 and 3.0.1 allows attackers to cause a denial of service (crash),…
CVE-2007-5671 — Medium (CVSS 4.4): HGFS.sys in the VMware Tools package in VMware Workstation 5.x before 5.5.6 build 80404, VMware Player before 1.0.6…
CVE-2010-1137 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in WebAccess in VMware VirtualCenter 2.0.2 and 2.5 and VMware ESX 3.0.3 and…

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