Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by access…

published 2013-05-05 13y ago modified 2026-06-16 4mo ago also EUVD-2013-1387

cvss: 8.8; version 3.1, CNA
cisa kev: Exploited; added 2022-03-03
epss: 77.7%; EPSS 77.7% chance of exploitation in 30 days, percentile 99.5%
public exploits: 2; Metasploit and Exploit-DB

Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly allocated or (2) is deleted, as exploited in the wild in May 2013.

Patch / fix

cisa required action Apply updates per vendor instructions.

links 2

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Timeline

2013-05-03 First public exploit (Metasploit exploit/windows/browser/ie_cgenericelement_uaf)
2013-05-05 Published
2022-03-03 Added to CISA KEV
2022-03-24 CISA patch deadline
2025-02-04 CISA SSVC: exploitation active

Known exploited

Added: 4y ago (2022-03-03)
Patch by: 2022-03-24 (4y ago)
Ransomware: Not known
Required action: Apply updates per vendor instructions.
Vendor, product: Microsoft, Internet Explorer
CISA name: Microsoft Internet Explorer Remote Code Execution Vulnerability

CISA SSVC

Exploitation: Active, exploited in the wild
Automatable: no
Technical impact: total
Assessed: last yr. (2025-02-04)

Exploit prediction

77.74% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit exploit/windows/browser/ie_cgenericelement_uaf MS13-038 Microsoft Internet Explorer CGenericElement Object Use-After-Free Vulnerability metasploit exploit, good rank, 2013-05-03
EDB-25294 Microsoft Internet Explorer - CGenericElement Object Use-After-Free (Metasploit) remote, 2013-05-07

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

Classification

Weakness

CWE-416 Use After Free

References

docs.microsoft.com /en-us/security-updates/securitybulletins/2013/ms13-038
vendor-advisory, patch
technet.microsoft.com /security/advisory/2847140
mitigation, patch, vendor-advisory
exploit-db.com /exploits/25294
exploit, third-party-advisory, vdb-entry
us-cert.gov /ncas/alerts/TA13-134A
third-party-advisory, us-government-resource
oval.cisecurity.org /repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16727
vdb-entry, signature, broken-link
cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-1347
government-resource, us-government-resource

Sources

CVE List CVE-2013-1347
NVD CVE-2013-1347

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