Microsoft Silverlight Information Disclosure Vulnerability
Microsoft Silverlight does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application.
- Vendor
- Microsoft
- Product
- Silverlight
- CVSS
- 5.5
- EPSS (exploit probability)
- 67.1%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2013-3896 being exploited?
Yes. CISA added CVE-2013-3896 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 67.1% (scored November 9, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-11-13. Full cross-catalog view: /kev-comparison
CVE-2013-3896 timeline
Every event links to its source. Catalog dates are each catalog's own; day offsets count from NVD publication. Data: JSON
What to do
CISA required actionThe impacted product is end-of-life and should be disconnected if still in use.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Microsoft Silverlight CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2016-0034 Microsoft Silverlight Runtime Remote Code Execution Vulnerabilityransomware use | [ HIGH ] | 8.8 | 69.4% | |
| CVE-2013-0074 Microsoft Silverlight Double Dereference Vulnerabilityransomware use | [ HIGH ] | 7.8 | 78.9% |