CVE-2016-0034

Name: CVE-2016-0034
Creator: NVD / NIST
Published: 2016-01-13T05:59:22.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 58.54%

Last modified Aug 14, 2026

CVE-2016-0034 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability.". CISA has confirmed active exploitation in the wild. EPSS estimates a 58.54% chance of exploitation in the next 30 days.

Description

Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

58.54%

99.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 15, 2022.

Affected Software

Vendor	Product	Versions
Microsoft	Silverlight	>= 5.0, < 5.1.41212.0

References

https://www.securitytracker.com/id/1034655Broken Link, Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-006Patch, Vendor Advisory
https://www.securitytracker.com/id/1034655Broken Link, Third Party Advisory, VDB Entry
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-006Patch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0034US Government Resource

Timeline

Published: Jan 13, 2016
Last Modified: Aug 14, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2016-0034?

How severe is CVE-2016-0034?

CVE-2016-0034 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 58.54% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2016-0034?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST