MEDIUM
CVE-2011-0991
CWE-399Published: April 13, 2011· Updated: Jun 16, 2026
6.8
CVSS v3.1
Official Description
Use-after-free vulnerability in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors related to finalizing and then resurrecting a DynamicMethod instance.
Technical Analysis
CVE-2011-0991 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:N/C:P/I:P/A:P
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (26)
→
http://secunia.com/advisories/44002Vendor Advisory
→
http://secunia.com/advisories/44076Vendor Advisory
→
http://www.mono-project.com/VulnerabilitiesVendor Advisory
→
http://www.vupen.com/english/advisories/2011/0904Vendor Advisory
Quick Facts
CVE IDCVE-2011-0991
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-399
CISA KEVNo
Affected2 vendor(s)
PublishedApr 13, 2011
Related CVEs (CWE-399)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2011-0991 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.