Security readout for executives and security teams
This is a remote code execution flaw in Microsoft Silverlight 5. A user who visits a malicious website with a vulnerable Silverlight runtime could allow attacker-controlled code to run or crash the runtime. CISA KEV listing indicates real-world exploitation has occurred. Exposure is most likely on legacy endpoints or browsers that still have Microsoft Silverlight 5 installed below 5.1.41212.0 and can load Silverlight content from websites. The source bundle does not provide CPE data or a broader affected-product matrix. Treat this as urgent for any environment still running Silverlight. It is legacy browser-exposed software, the impact is full code execution, and CISA KEV confirms known exploitation. Scope may be limited if Silverlight has already been removed. Mitigation focus: Update Microsoft Silverlight to 5.1.41212.0 or later per Microsoft guidance.; Prioritize remediation for internet-browsing endpoints and legacy application workstations.; Remove or disable Silverlight only if vendor guidance and business requirements allow it..
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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Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2016-0034 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- MS16-006CVE reference · vendor-advisory, x_refsource_MS
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0034CVE 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.