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CVE-2013-0091

36
FAUCET Score

CVE-2013-0091 is a critical use-after-free vulnerability in Microsoft Internet Explorer 8, impacting various Windows operating systems including Windows 7, Vista, XP, and Server versions. This flaw allows remote attackers to execute arbitrary code by enticing a user to visit a specially crafted website that triggers access to a deallocated memory object. With a CVSS score of 9.3, this vulnerability is highly severe, requiring medium attack complexity but offering complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, ExploitDB) is currently identified, and community discussion is minimal, its high FAUCET Risk Score of 97/100 indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
8CPE matchmatch criteria
cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
19.80%
Probability of exploitation in next 30 days
EPSS Percentile
97.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.1980 is in the 85th percentile among its peer group of 8,920 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

docs.microsoft.com / en-us/security-updates/securitybulletins/2013/ms13-021
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16526
us-cert.gov / ncas/alerts/TA13-071A
US Government Resource