CVE-2012-4777

Description

The code-optimization feature in the reflection implementation in Microsoft .NET Framework 4 and 4.5 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka "WPF Reflection Optimization Vulnerability."

Category

9.3
CVSS
Severity: Critical
CVSS 2.0 •
EPSS 9.07% Top 10%
Vendor Advisory microsoft.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.us-cert.gov/cas/techalerts/TA12-318A.html third party advisory us government resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074 vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15960 signature vdb entry
http://osvdb.org/87267 vdb entry
http://www.securityfocus.com/bid/56464 vdb entry
http://secunia.com/advisories/51236 third party advisory
http://www.securitytracker.com/id?1027753 vdb entry

Frequently Asked Questions

What is the severity of CVE-2012-4777?
CVE-2012-4777 has been scored as a critical severity vulnerability.
How to fix CVE-2012-4777?
To fix CVE-2012-4777, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-4777 being actively exploited in the wild?
It is possible that CVE-2012-4777 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~9% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.