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CVE-2013-2551

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka "Internet Expl…

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Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka "Internet Explorer Use After Free Vulnerability," a different vulnerability than CVE-2013-1308 and CVE-2013-1309.
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: 74.10%: +0.37

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

TechTarget
Press · 01 Mar 2021, 08:00 · 3 ransomware distribution methods popular with attackers - TechTarget
Malwarebytes
Press · 31 Aug 2017, 07:00 · RIG exploit kit distributes Princess ransomware - Malwarebytes
The Register
Press · 16 Aug 2017, 07:00 · Russian malware scum post new rent-an-exploit - The Register
BleepingComputer
Press · 14 Aug 2017, 07:00 · New Disdain Exploit Kit Sold on Underground Hacking Forums - BleepingComputer
Bitdefender
Press · 27 May 2015, 07:00 · 7 Most Used Exploits In The Wild, According to Bitdefender - Bitdefender
See all 7 source documents
ZDNET
Press · 13 Mar 2015, 07:00 · New CryptoLocker ransomware targets gamers - ZDNET
Recorded Future
Press · 10 Dec 2014, 08:00 · Tracking Moving Targets: Exploit Kits and CVEs - Recorded Future

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

1

Public exploit entries / repo candidates

Source entries and unverified repository candidates are counted separately.

Public exploit evidence
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 74.1%
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 13:57:32.543775+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
11 Mar 2013, 10:00
First press mention
10 Dec 2014, 08:00
Latest press mention
01 Mar 2021, 08:00
Added to the CISA KEV catalog
28 Mar 2022, 00:00
Score calculated
05 Nov 2026, 13:57
PoCs on GitHub
1 repositories