How severe is CVE-2010-3243?

CVE-2010-3243 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2010-3243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3243?

CVE-2010-3243 primarily affects Microsoft Sharepoint Server. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3243?

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

When was CVE-2010-3243 published?

CVE-2010-3243 was published on 2010-10-13 and last updated on 2026-06-16.

CVE-2010-3243

CVE-2010-3243 is a medium-severity vulnerability in Microsoft Sharepoint Server with a CVSS 3.x base score of 4.3. Its EPSS exploit-prediction score of 16% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 16% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Microsoft Sharepoint Server
Published: 2010-10-13
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the toStaticHTML function in Microsoft Internet Explorer 8, and the SafeHTML function in Microsoft Windows SharePoint Services 3.0 SP2 and Office SharePoint Server 2007 SP2, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, aka "HTML Sanitization Vulnerability."

Frequently asked questions

What is CVE-2010-3243?: Cross-site scripting (XSS) vulnerability in the toStaticHTML function in Microsoft Internet Explorer 8, and the SafeHTML function in Microsoft Windows SharePoint Services 3.0 SP2 and Office SharePoint Server 2007 SP2, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors, aka "HTML Sanitization Vulnerability."
How severe is CVE-2010-3243?: CVE-2010-3243 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2010-3243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3243?: CVE-2010-3243 primarily affects Microsoft Sharepoint Server. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-3243 published?: CVE-2010-3243 was published on 2010-10-13 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:microsoft:sharepoint_server:2007:sp2:x32:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_server:2007:sp2:x64:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x32:*:*:*:*:*
cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x64:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Sharepoint Server

CVE-2013-1330 — Critical (CVSS 10.0): The default configuration of Microsoft SharePoint Portal Server 2003 SP3, SharePoint Server 2007 SP3 and 2010 SP1 and…
CVE-2020-1595 — Critical (CVSS 9.9): <p>A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from…
CVE-2020-1210 — Critical (CVSS 9.9): <p>A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source…
CVE-2026-20963 — Critical (CVSS 9.8): Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a…
CVE-2025-53770 — Critical (CVSS 9.8): Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute…
CVE-2023-29357 — Critical (CVSS 9.8): Microsoft SharePoint Server Elevation of Privilege Vulnerability

All CVEs affecting Microsoft Sharepoint Server →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →