How severe is CVE-2016-0033?

CVE-2016-0033 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-0033 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-0033?

CVE-2016-0033 primarily affects Microsoft .net Framework. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-0033?

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

When was CVE-2016-0033 published?

CVE-2016-0033 was published on 2016-02-10 and last updated on 2026-06-17.

CVE-2016-0033

CVE-2016-0033 is a high-severity vulnerability in Microsoft .net Framework with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 18% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-94.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 18% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Microsoft .net Framework
Published: 2016-02-10
Last modified: 2026-06-17

Description

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, and 4.6.1 does not prevent recursive compilation of XSLT transforms, which allows remote attackers to cause a denial of service (performance degradation) via crafted XSLT data, aka ".NET Framework Stack Overflow Denial of Service Vulnerability."

Frequently asked questions

What is CVE-2016-0033?: Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, and 4.6.1 does not prevent recursive compilation of XSLT transforms, which allows remote attackers to cause a denial of service (performance degradation) via crafted XSLT data, aka ".NET Framework Stack Overflow Denial of Service Vulnerability."
How severe is CVE-2016-0033?: CVE-2016-0033 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-0033 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 18% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-0033?: CVE-2016-0033 primarily affects Microsoft .net Framework. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-0033?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-0033 published?: CVE-2016-0033 was published on 2016-02-10 and last updated on 2026-06-17.

References

Affected products (6)

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:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*

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