CVE-2016-0034 kev+ ransomware in the critical feed json
Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary…
published 2016-01-13 10 y ago modified 2026-08-14 2 mo ago also EUVD-2016-0072
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-05-25, used in ransomware
- epss
- 69.4%
- EPSS 69.4% chance of exploitation in 30 days, percentile 99.3%
- public exploits
- 0
- none known
Summary
Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."
Patch / fix
cisa required action The impacted products are end-of-life and should be disconnected if still in use.
- microsoft silverlight 5.1.41212.0
Timeline
- Found exploited as a 0-day (Project Zero)
- 0-day patched (Project Zero)
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-06-15 (4 y ago)
- Ransomware
- Known to be used in ransomware campaigns
- Required action
- The impacted products are end-of-life and should be disconnected if still in use.
- Vendor, product
- Microsoft, Silverlight
- CISA name
- Microsoft Silverlight Runtime Remote Code Execution Vulnerability
Zero-day
Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.
- Found
- 2015-11-25
- Patched
- 2016-01-12
- Details
- project zero tracker
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 y ago
Exploit prediction
69.40% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2016/ms16-006
vendor-advisory, patch
-
securitytracker.com
/id/1034655
vdb-entry, broken-link, third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-0034
government-resource, us-government-resource
Sources
- CVE List CVE-2016-0034
- NVD CVE-2016-0034
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.