Security readout for executives and security teams
This flaw lets a malicious Silverlight application read sensitive information because Silverlight 5 did not properly validate pointers. It requires user interaction, but CISA lists CVE-2013-3896 in KEV, so organizations should treat any remaining vulnerable Silverlight installations as urgent legacy risk. Exposure is most likely on endpoints or browsers that still have Microsoft Silverlight 5 earlier than 5.1.20913.0 installed and permitted to run Silverlight applications. Treat this as a high-priority legacy software cleanup item. The technical severity is medium, but KEV status means the vulnerability has known exploitation evidence and should not remain on managed endpoints. Mitigation focus: Update Silverlight 5 to 5.1.20913.0 or later where it remains installed.; Remove Silverlight where no approved business dependency remains.; Restrict execution of Silverlight applications pending remediation..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CVE-2013-3896 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CISA KEV status
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- MS13-087CVE reference · vendor-advisory, x_refsource_MS
- oval:org.mitre.oval:def:19003CVE reference · vdb-entry, signature
- oval:org.mitre.oval:def:19055CVE reference · vdb-entry, signature
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3896CVE reference · government-resource
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.