How severe is CVE-2011-0990?

CVE-2011-0990 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2011-0990 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0990?

CVE-2011-0990 primarily affects Mono. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0990?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-0990 published?

CVE-2011-0990 was published on 2011-04-13 and last updated on 2026-06-16.

CVE-2011-0990

CVE-2011-0990 is a medium-severity vulnerability in Mono with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-362.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Mono
Published: 2011-04-13
Last modified: 2026-06-16

Description

Race condition in the FastCopy optimization in the Array.Copy method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to trigger a buffer overflow and modify internal data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file in which a thread makes a change after a type check but before a copy action.

Frequently asked questions

What is CVE-2011-0990?: Race condition in the FastCopy optimization in the Array.Copy method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, allows remote attackers to trigger a buffer overflow and modify internal data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file in which a thread makes a change after a type check but before a copy action.
How severe is CVE-2011-0990?: CVE-2011-0990 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2011-0990 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0990?: CVE-2011-0990 primarily affects Mono. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0990 published?: CVE-2011-0990 was published on 2011-04-13 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:mono:mono:*:*:*:*:*:*:*:*
cpe:2.3:a:novell:moonlight:2.0:*:*:*:*:*:*:*
cpe:2.3:a:novell:moonlight:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:novell:moonlight:2.4:*:*:*:*:*:*:*
cpe:2.3:a:novell:moonlight:2.31:*:*:*:*:*:*:*
cpe:2.3:a:novell:moonlight:3.0:*:*:*:*:*:*:*
cpe:2.3:a:novell:moonlight:3.99:*:*:*:*:*:*:*

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Other CWE-362 (Race Condition) vulnerabilities

CVE-2022-27626 — Critical (CVSS 10.0): A vulnerability regarding concurrent execution using shared resource with improper synchronization ('Race Condition')…
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CVE-2014-0703 — Critical (CVSS 10.0): Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition…
CVE-2010-1228 — Critical (CVSS 10.0): Multiple race conditions in the sandbox infrastructure in Google Chrome before 4.1.249.1036 have unspecified impact and…
CVE-2008-6598 — Critical (CVSS 10.0): Multiple race conditions in WANPIPE before 3.3.6 have unknown impact and attack vectors related to "bri restart logic."
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