CVE-2012-1858 EXPLOIT
4.3
MEDIUM · CVSS 2.0 · EPSS 22% (pctl 98)
Patch early
A public exploit exists.
Description
The toStaticHTML API (aka the SafeHTML component) in Microsoft Internet Explorer 8 and 9, Communicator 2007 R2, and Lync 2010 and 2010 Attendee does not properly handle event attributes and script, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted HTML document, aka "HTML Sanitization Vulnerability."
Scoring
| CVSS | 4.3 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| EPSS | 22.02% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-200 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2012-06-12 |
| Last modified | 2026-06-16 |
Affected (9)
| Vendor | Product |
|---|---|
| microsoft | internet explorer |
| microsoft | lync |
| microsoft | office communicator |
| microsoft | windows 2003 server |
| microsoft | windows 7 |
| microsoft | windows server 2003 |
| microsoft | windows server 2008 |
| microsoft | windows vista |
| microsoft | windows xp |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Internet Explorer 9 / SharePoint / Lync - toStaticHTML HTML Sanitizing Bypass (MS12-037/MS12-039/MS12-050) | 2012-07-12 |
References
- http://www.us-cert.gov/cas/techalerts/TA12-164A.html
- http://www.us-cert.gov/cas/techalerts/TA12-192A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-050
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15530
- http://www.us-cert.gov/cas/techalerts/TA12-164A.html
- http://www.us-cert.gov/cas/techalerts/TA12-192A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-037
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-039
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-050
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15530
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