How severe is CVE-2015-1673?

CVE-2015-1673 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2015-1673 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1673?

CVE-2015-1673 primarily affects Microsoft .net Framework. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-1673?

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-2015-1673 published?

CVE-2015-1673 was published on 2015-05-13 and last updated on 2026-06-17.

CVE-2015-1673

CVE-2015-1673 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 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-264.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Microsoft .net Framework
Published: 2015-05-13
Last modified: 2026-06-17

Description

The Windows Forms (aka WinForms) libraries in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 allow user-assisted remote attackers to execute arbitrary code via a crafted partial-trust application, aka "Windows Forms Elevation of Privilege Vulnerability."

Frequently asked questions

What is CVE-2015-1673?: The Windows Forms (aka WinForms) libraries in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 allow user-assisted remote attackers to execute arbitrary code via a crafted partial-trust application, aka "Windows Forms Elevation of Privilege Vulnerability."
How severe is CVE-2015-1673?: CVE-2015-1673 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2015-1673 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1673?: CVE-2015-1673 primarily affects Microsoft .net Framework. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-1673?: 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-2015-1673 published?: CVE-2015-1673 was published on 2015-05-13 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:microsoft:.net_framework:1.1:sp1:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.5.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*

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