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CVE-2011-0663

37
FAUCET Score

CVE-2011-0663 describes multiple integer overflow vulnerabilities within Microsoft's JScript and VBScript engines (versions 5.6-5.8), impacting various Windows operating systems. This critical vulnerability, rated 8.8 CVSS, allows remote attackers to execute arbitrary code by enticing a user to visit a specially crafted web page. While no public exploits are readily available (Metasploit, Nuclei, ExploitDB), and there's minimal community discussion or media coverage, its high FAUCET Risk Score of 94/100 indicates significant potential impact if exploited. There is no evidence of active exploitation in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
5.6CPE matchmatch criteria
cpe:2.3:a:microsoft:jscript:5.6:*:*:*:*:*:*:*
5.6CPE matchmatch criteria
cpe:2.3:a:microsoft:vbscript:5.6:*:*:*:*:*:*:*
5.7CPE matchmatch criteria
cpe:2.3:a:microsoft:jscript:5.7:*:*:*:*:*:*:*
5.7CPE matchmatch criteria
cpe:2.3:a:microsoft:vbscript:5.7:*:*:*:*:*:*:*
5.8CPE matchmatch criteria
cpe:2.3:a:microsoft:jscript:5.8:*:*:*:*:*:*:*

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
26.22%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.2622 is in the 98th percentile among its peer group of 14,825 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

osvdb.org / 71774
docs.microsoft.com / en-us/security-updates/securitybulletins/2011/ms11-031
secunia.com / advisories/44162
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12673
securityfocus.com / bid/47249
securitytracker.com / id
us-cert.gov / cas/techalerts/TA11-102A.html
US Government Resource
vupen.com / english/advisories/2011/0949