CVE-2016-0034: in the CISA KEV catalogue
Microsoft Silverlight Runtime Remote Code Execution Vulnerability. CISA added CVE-2016-0034 to the Known Exploited Vulnerabilities catalogue on 2022-05-25 with a default due date of 2022-06-15. Known ransomware campaign use: Known. Forensic triage flag: No.
Microsoft Silverlight mishandles negative offsets during decoding, which allows attackers to execute remote code or cause a denial-of-service (DoS). (CISA description)
- Vendor / product
- Microsoft Silverlight
- CWE
- CWE-20
- CISA required action
- The impacted products are end-of-life and should be disconnected if still in use.
- EPSS
- 69%, percentile 99 (scored 2026-11-04)
EPSS puts about 69 in 100 odds (69%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 99% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2016-0034 in the CISA KEV catalogue?
Yes. CISA added CVE-2016-0034 (Microsoft Silverlight Runtime Remote Code Execution Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2022-05-25. CISA's default due date for it is 2022-06-15.
Is CVE-2016-0034 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2016-0034.
What should I do about CVE-2016-0034?
CISA's required action: The impacted products are end-of-life and should be disconnected if still in use.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2016-0034