Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code or cause a denial of servic…

published 2014-03-12 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-0345

cvss: 9.3; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 69.5%; EPSS 69.5% chance of exploitation in 30 days, percentile 99.3%
public exploits: 2; Metasploit, Exploit-DB

Use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a certain sequence of manipulations of a TextRange element, aka "Internet Explorer Memory Corruption Vulnerability."

Timeline

2014-03-11 First public exploit (Metasploit exploit/windows/browser/ms14_012_textrange)
2014-03-12 Published

Exploit prediction

69.45% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

Metasploit exploit/windows/browser/ms14_012_textrange MS14-012 Microsoft Internet Explorer TextRange Use-After-Free metasploit exploit, normal rank, 2014-03-11
EDB-32438 Microsoft Internet Explorer - TextRange Use-After-Free (MS14-012) (Metasploit) remote, 2014-03-22

CVSS scores

assigned by	version	score	vector
NVD	2.0	9.3	AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-416 Use After Free

References

exploit-db.com /exploits/32438
exploit
docs.microsoft.com /en-us/security-updates/securitybulletins/2014/ms14-012
vendor-advisory

Sources

CVE List CVE-2014-0307
NVD CVE-2014-0307

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.

Summary