Silverlight
Summary iPlain-English security verdict for Silverlight, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Silverlight currently scores 20/100 — critical, with active exploitation. 4 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2013-0074. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
Disclosure trend iNew CVEs published for Silverlight each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
2 of its known vulnerabilities are linked to ransomware campaigns (CISA KEV).
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2013-0074 HIGH exploited ransomware EPSS 82% → fixed in 5.1.20125.0 CVE-2016-0034 HIGH exploited ransomware EPSS 70% → fixed in 5.1.41212.0 CVE-2013-3896 MEDIUM exploited EPSS 70% → fixed in 5.1.20913.0 CVE-2015-1671 HIGH exploited EPSS 55% → see advisory CVE-2016-3209 MEDIUM Information disclosure EPSS 54% → see advisory CVE-2017-0108 HIGH Memory corruption EPSS 50% → see advisory CVE-2017-0283 HIGH EPSS 39% → see advisory CVE-2015-2455 HIGH Improper input validation EPSS 37% → see advisory CVE-2015-2456 HIGH Improper input validation EPSS 36% → see advisory CVE-2015-2464 HIGH Improper input validation EPSS 36% → see advisory CVE-2015-2463 HIGH Improper input validation EPSS 34% → see advisory CVE-2013-3129 HIGH Code injection EPSS 32% → see advisoryGet alerted about Silverlight
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Frequently asked
Is Silverlight safe and patched?
Silverlight currently scores 20/100 — critical, with active exploitation. 4 of its known vulnerabilities are being actively exploited in the wild (CISA KEV), including CVE-2013-0074. Upgrade immediately and review your exposure to the actively-exploited CVEs below.
What should I do about Silverlight now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Microsoft's official advisory. Some issues are under active exploitation, so treat this as urgent.
Why is Silverlight listed on IsItPatched?
Silverlight was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Microsoft's official advisory before you patch or upgrade.