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Vulnerability record · CVE-2016-3255 · published 13 July 2016

CVE-2016-3255: Microsoft .net framework information exposure vulnerability

Microsoft · .Net Framework

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, and 4.6.1 allows remote attackers to read arbitrary files via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka ".NET Information Disclosure Vulnerability."

7.5 CVSS 3.0 High EPSS 25% · top 2.2% CWE-200 · Information exposure
7.5CVSS 3.0 base score, v2 5.0
25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, and 4.6.1 allows remote attackers to read arbitrary files via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, aka ".NET Information Disclosure Vulnerability."

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/91601
http://www.securitytracker.com/id/1036291
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-091
http://www.securityfocus.com/bid/91601
http://www.securitytracker.com/id/1036291
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-091

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-3255), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.