CVE-2010-3971 EXPLOIT
9.3
HIGH · CVSS 2.0 · EPSS 81.7% (pctl 100)
Patch early
A public exploit exists.
Description
Use-after-free vulnerability in the CSharedStyleSheet::Notify function in the Cascading Style Sheets (CSS) parser in mshtml.dll, as used in Microsoft Internet Explorer 6 through 8 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a self-referential @import rule in a stylesheet, aka "CSS Memory Corruption Vulnerability."
Scoring
| CVSS | 9.3 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:M/Au:N/C:C/I:C/A:C |
| EPSS | 81.66% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2010-12-22 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| microsoft | internet explorer |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Internet Explorer - CSS Recursive Import Use-After-Free (MS11-003) (Metasploit) | 2011-02-08 |
| exploit-db | Microsoft Internet Explorer 8 - CSS Parser | 2010-12-15 |
| exploit-db | Microsoft Internet Explorer 8 - CSS Parser Denial of Service | 2010-12-08 |
References
- http://blogs.technet.com/b/srd/archive/2011/01/07/assessing-the-risk-of-public-issues-currently-being-tracked-by-the-msrc.aspx
- http://seclists.org/fulldisclosure/2010/Dec/110
- http://secunia.com/advisories/42510
- http://support.avaya.com/css/P8/documents/100127294
- http://www.breakingpointsystems.com/community/blog/ie-vulnerability/
- http://www.exploit-db.com/exploits/15708
- http://www.exploit-db.com/exploits/15746
- http://www.kb.cert.org/vuls/id/634956
- http://www.microsoft.com/technet/security/advisory/2488013.mspx
- http://www.securityfocus.com/bid/45246
- http://www.securitytracker.com/id?1024922
- http://www.vupen.com/english/advisories/2010/3156
- http://www.vupen.com/english/advisories/2011/0318
- http://www.wooyun.org/bugs/wooyun-2010-0885
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-003
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12382
- http://blogs.technet.com/b/srd/archive/2011/01/07/assessing-the-risk-of-public-issues-currently-being-tracked-by-the-msrc.aspx
- http://seclists.org/fulldisclosure/2010/Dec/110
- http://secunia.com/advisories/42510
- http://support.avaya.com/css/P8/documents/100127294
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