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Vulnerabilities

Vulnerability · CVE-2016-0034

Microsoft Silverlight Runtime Remote Code Execution Vulnerability

Published Nov 25, 2015 · catalog updated Aug 13, 2026 · Microsoft Silverlight

Patch now

CVE-2016-0034 is in the CISA known-exploited catalog, due Jun 15, 2022. Confirm Microsoft Silverlight against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High8.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
69.40%
Remediation
Remediation guidance
Affected products
cpe microsoft/silverlight · vendor Microsoft Silverlight

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."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/silverlightversion unspecified
  • vendor Microsoft Silverlightversion unspecified

How to fix CVE-2016-0034

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2016-0034 is in the CISA known-exploited catalog, due Jun 15, 2022. Confirm Microsoft Silverlight against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. The impacted products are end-of-life and should be disconnected if still in use.

What should an analyst verify?

CWE-20: Improper Input Validation. EPSS 69.40%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 12, 2016 · Catalog

    Detected

    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."

  2. May 25, 2022 · CISA KEV

    Known exploited

    The impacted products are end-of-life and should be disconnected if still in use.

  3. Jun 15, 2022 · CISA KEV

    Remediation due

    The impacted products are end-of-life and should be disconnected if still in use.

  4. Aug 13, 2026 · Catalog

    Updated

    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."

Sources

  • CISA KEVConfirmed exploitationCVE-2016-0034

    Microsoft Silverlight mishandles negative offsets during decoding, which allows attackers to execute remote code or cause a denial-of-service (DoS).

    cisa.gov
  • CVE.orgVulnerability recordCVE-2016-0034

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2016-0034

    30-day exploitation probability 69.4%

    first.org
  • NIST NVDVulnerability recordCVE-2016-0034

    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 Vulnerabi

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2016-0034

    Microsoft Silverlight mishandles negative offsets during decoding, which allows attackers to execute remote code or cause a denial-of-service (DoS).

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.