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CVE-2016-0034

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 Vulnerabi…

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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."
CVSS 8.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.7/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8.8: +1.32
  • Fresh EPSS: 69.40%: +0.35

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 7 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

Hackread
Press · 03 Nov 2025, 08:00 · New Dante Spyware Linked to Rebranded Hacking Team, Now Memento Labs - Hackread
Kaspersky
Press · 24 Jul 2019, 10:54 · Exploit Prevention - Kaspersky
www.trendmicro.com
Press · 27 Feb 2017, 08:00 · RATANKBA: Delving into Large-scale Watering Holes - www.trendmicro.com
Tripwire
Press · 19 Jan 2017, 08:00 · Got Outdated Software? RIG Exploit Kit and Cerber Ransomware Hope You Say 'Yes' - Tripwire
Unit 42
Press · 07 Jun 2016, 07:00 · Understanding Angler Exploit Kit - Part 2: Examining Angler EK - Unit 42
See all 7 source documents
Ars Technica
Press · 25 Feb 2016, 08:00 · Malicious websites exploit Silverlight bug that can pwn Macs and Windows - Ars Technica
Securelist
Press · 13 Jan 2016, 08:00 · The Mysterious Case of CVE-2016-0034: The hunt for a Microsoft Silverlight 0-day - Securelist

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.7 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 8.8; EPSS 69.4%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:57:42.957206+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
13 Jan 2016, 02:00
First press mention
13 Jan 2016, 08:00
Added to the CISA KEV catalog
25 May 2022, 00:00
Latest press mention
03 Nov 2025, 08:00
Score calculated
05 Nov 2026, 13:57