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TI-2016-00028 Aliases CVE-2016-0034GHSA-8wh9-64cq-2gj5

Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding…

Priority CRITICAL 97Exploited in the wildPublished · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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."

Why it matters now

Exploitation Active In CISA KEV since 2022-05-25CISA due date 2022-06-15Known ransomware use
EPSS 0.69397 99th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:silverlight:*:*:*:*:*:*:*:*5.0 to before 5.1.41212.0VulnerableMicrosoft
  • cpe:2.3:a:microsoft:silverlight:*:*:*:*:*:*:*:* Versions 5.0 to before 5.1.41212.0 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2022-05-25 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2016-0034
  3. 2026-10-03 Alias added: GHSA-8wh9-64cq-2gj5

References

Patch 1

  • TI-2015-01495 The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1… KEVCVSS 3.1HIGH 7.8
  • TI-2013-00028 Microsoft Silverlight 5, and 5 Developer Runtime, before 5.1.20125.0 does not properly… KEVCVSS 3.1HIGH 7.8
  • TI-2013-03402 Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during… KEVCVSS 3.1MEDIUM 5.5
  • TI-2015-02157 Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows… CVSS 2.0HIGH 9.3
  • TI-2015-02165 Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows… CVSS 2.0HIGH 9.3
  • TI-2015-02158 Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows… CVSS 2.0HIGH 9.3
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences