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 69.71%

Last modified Jun 17, 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 69.71% 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

69.71%

99.3th 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

http://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
http://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: Jun 17, 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 69.71% 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.

Are you affected by CVE-2016-0034?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST