How severe is CVE-2016-7270?

CVE-2016-7270 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 high, integrity none, and availability none.

Is CVE-2016-7270 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-7270?

CVE-2016-7270 affects Microsoft .net Framework. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-7270?

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-2016-7270 published?

CVE-2016-7270 was published on 2016-12-20 and last updated on 2026-06-17.

CVE-2016-7270

CVE-2016-7270 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 20% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-310.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 20% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Microsoft .net Framework
Published: 2016-12-20
Last modified: 2026-06-17

Description

The Data Provider for SQL Server in Microsoft .NET Framework 4.6.2 mishandles a developer-supplied key, which allows remote attackers to bypass the Always Encrypted protection mechanism and obtain sensitive cleartext information by leveraging key guessability, aka ".NET Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2016-7270?: The Data Provider for SQL Server in Microsoft .NET Framework 4.6.2 mishandles a developer-supplied key, which allows remote attackers to bypass the Always Encrypted protection mechanism and obtain sensitive cleartext information by leveraging key guessability, aka ".NET Information Disclosure Vulnerability."
How severe is CVE-2016-7270?: CVE-2016-7270 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 high, integrity none, and availability none.
Is CVE-2016-7270 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 20% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-7270?: CVE-2016-7270 affects Microsoft .net Framework. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-7270?: 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-2016-7270 published?: CVE-2016-7270 was published on 2016-12-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*

More vulnerabilities in Microsoft .net Framework

CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-4073 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 processes unverified data during interaction…
CVE-2014-1806 — Critical (CVSS 10.0): The .NET Remoting implementation in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5, 3.5.1, 4, 4.5, and 4.5.1 does not…
CVE-2013-0073 — Critical (CVSS 10.0): The Windows Forms (aka WinForms) component in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not…
CVE-2008-5100 — Critical (CVSS 10.0): The strong name (SN) implementation in Microsoft .NET Framework 2.0.50727 relies on the digital signature Public Key…
CVE-2002-0369 — Critical (CVSS 10.0): Buffer overflow in ASP.NET Worker Process allows remote attackers to cause a denial of service (restart) and possibly…

All CVEs affecting Microsoft .net Framework →

Other CWE-310 (Cryptographic Issues) vulnerabilities

CVE-2014-7878 — Critical (CVSS 10.0): The Application Lifecycle Service (ALS) in HP Helion Cloud Development Platform 1.0, when a virtual machine is derived…
CVE-2013-3712 — Critical (CVSS 10.0): SUSE Studio Onsite 1.3.x before 1.3.6 and SUSE Studio Extension for System z 1.3 uses "static" secret tokens, which has…
CVE-2013-6952 — Critical (CVSS 10.0): The Belkin WeMo Home Automation firmware before 3949 has a hardcoded GPG key, which makes it easier for remote…
CVE-2013-6838 — Critical (CVSS 10.0): An unspecified Enghouse Interactive Professional Services "addon product" in Enghouse Interactive IVR Pro (VIP2000)…
CVE-2013-0137 — Critical (CVSS 10.0): The default configuration of the Digital Alert Systems DASDEC EAS device before 2.0-2 and the Monroe Electronics R189…
CVE-2011-5123 — Critical (CVSS 10.0): The Antivirus component in Comodo Internet Security before 5.3.175888.1227 does not check whether X.509 certificates in…

Browse all CWE-310 (Cryptographic Issues) vulnerabilities →