How severe is CVE-2015-1670?

CVE-2015-1670 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-1670 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-1670?

CVE-2015-1670 primarily affects Microsoft .net Framework. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-1670?

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

When was CVE-2015-1670 published?

CVE-2015-1670 was published on 2015-05-13 and last updated on 2026-06-17.

CVE-2015-1670

CVE-2015-1670 is a medium-severity vulnerability in Microsoft .net Framework with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 16% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 16% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft .net Framework
Published: 2015-05-13
Last modified: 2026-06-17

Description

The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2, allows remote attackers to obtain sensitive information from process memory via a crafted OpenType font on a web site, aka "OpenType Font Parsing Vulnerability."

Frequently asked questions

What is CVE-2015-1670?: The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2, allows remote attackers to obtain sensitive information from process memory via a crafted OpenType font on a web site, aka "OpenType Font Parsing Vulnerability."
How severe is CVE-2015-1670?: CVE-2015-1670 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-1670 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 16% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-1670?: CVE-2015-1670 primarily affects Microsoft .net Framework. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-1670?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-1670 published?: CVE-2015-1670 was published on 2015-05-13 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:a:microsoft:.net_framework:3.0: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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