CVE-2016-0034Microsoft Silverlight Runtime Remote Code Execution Vulnerability

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."

8.8 HIGHEPSS 69.39%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-08-14 05:16 UTC

OverviewCVSS details

8.8HIGHCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Jan 13, 2016
Assigner: microsoft

Affected

silverlight (microsoft)

Versions: 5.0 before 5.1.41212.0
Fixed in: 5.1.41212.0

Exploitation

Public exploit: None listed
CISA KEV: Listed · May 25, 2022
KEV due date: Jun 15, 2022
Ransomware use: Known
SSVC: Exploitation active · Automatable no · Impact total

EPSS · FIRST, scored Nov 9

69.39%chance of exploitation in 30 days

Higher than 99.36% of CVEs

CVSS 3.1 · NVD

8.8High

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

9.3High

AV:N/AC:M/Au:N/C:C/I:C/A:C

Attack vector: Network
Attack complexity: Medium
Authentication: None
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
8.8	HIGH	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3	HIGH	2.0NVD	AV:N/AC:M/Au:N/C:C/I:C/A:C

CISA required action

⚡ Known exploited · remediation due Jun 15, 2022

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

Details

CVE ID: CVE-2016-0034
Status: Analyzed
Assigner (CNA): microsoft
Published: Jan 13, 2016
Last modified: 2026-08-14 05:16 UTC
Weaknesses: CWE-20

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 15:15 UTC.