How severe is CVE-2010-3958?

CVE-2010-3958 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2010-3958 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-3958?

CVE-2010-3958 primarily affects Microsoft .net Framework. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-3958?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2010-3958 published?

CVE-2010-3958 was published on 2011-04-13 and last updated on 2026-06-16.

CVE-2010-3958

CVE-2010-3958 is a critical-severity vulnerability in Microsoft .net Framework with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 24% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 24% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft .net Framework
Published: 2011-04-13
Last modified: 2026-06-16

Description

The x86 JIT compiler in Microsoft .NET Framework 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0 does not properly compile function calls, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka ".NET Framework Stack Corruption Vulnerability."

Frequently asked questions

What is CVE-2010-3958?: The x86 JIT compiler in Microsoft .NET Framework 2.0 SP2, 3.5 SP1, 3.5.1, and 4.0 does not properly compile function calls, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP), (2) a crafted ASP.NET application, or (3) a crafted .NET Framework application, aka ".NET Framework Stack Corruption Vulnerability."
How severe is CVE-2010-3958?: CVE-2010-3958 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2010-3958 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 24% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-3958?: CVE-2010-3958 primarily affects Microsoft .net Framework. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-3958?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2010-3958 published?: CVE-2010-3958 was published on 2011-04-13 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:sp1:*:*:*:*:*:*

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