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."

Published: 2010-10-13 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-3243 is rated Moderate Risk (49.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 38.07%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2010-3243

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 39.62% 38.07% -1.55%
2 2025-12-27 38.07% 39.62% +1.55%
3 2025-10-28 — 38.07% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-3243

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 134c704f-9b21-4f2e-91b3-4a467353bcc0
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2010-3243

Affected software / configurations for CVE-2010-3243

Vendor Product Version Raw CPE
microsoft sharepoint_server 2007 cpe:2.3:a:microsoft:sharepoint_server:2007:sp2:x32:*:*:*:*:*
microsoft sharepoint_server 2007 cpe:2.3:a:microsoft:sharepoint_server:2007:sp2:x64:*:*:*:*:*
microsoft sharepoint_services 3.0 cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x32:*:*:*:*:*
microsoft sharepoint_services 3.0 cpe:2.3:a:microsoft:sharepoint_services:3.0:sp2:x64:*:*:*:*:*
microsoft internet_explorer 8 cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*

References for CVE-2010-3243

cvelogic Threat Intelligence