CVE-2011-0989: n/a vulnerability

CVE-2011-0989: The RuntimeHelpers.InitializeArray method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3...

The RuntimeHelpers.InitializeArray method in metadata/icall.c in Mono, when Moonlight 2.x before 2.4.1 or 3.x before 3.99.3 is used, does not properly restrict data types, which allows remote attackers to modify internal read-only data structures, and cause a denial of service (plugin crash) or corrupt the internal state of the security manager, via a crafted media file, as demonstrated by modifying a C# struct.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:14 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2011-0989 affects legacy Mono/Moonlight browser plugin runtimes. A malicious media file could make the plugin crash or interfere with internal security state. Business risk is mainly for environments that still allow Moonlight content or retain old Mono/Moonlight packages. Exposure is likely limited to legacy systems running Moonlight 2.x or 3.x and processing untrusted media content. Modern environments without Moonlight are unlikely to be affected based on the provided sources. Treat as a legacy exposure cleanup item unless Moonlight is still present in production. If present, prioritize removal or upgrade because the attack surface is remote and tied to untrusted media handling. Mitigation focus: Upgrade Moonlight 2.x to 2.4.1 or later if still used.; Upgrade Moonlight 3.x to 3.99.3 or later if still used.; Remove or disable Moonlight where business use no longer exists..

Prepared: Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Apr 13, 2011, 21:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.novell.com/show_bug.cgi?id=667077CVE reference · x_refsource_CONFIRM
https://github.com/mono/mono/commit/035c8587c0d8d307e45f1b7171a0d337bb451f1eCVE reference · x_refsource_CONFIRM
momo-runtime-security-bypass(66624)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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