A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory.

published 2017-04-12 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-0569

cvss: 7.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 45.6%; EPSS 45.6% chance of exploitation in 30 days, percentile 98%
public exploits: 1; Exploit-DB

A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user, a.k.a. "Internet Explorer Memory Corruption Vulnerability."

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0202 advisory

Timeline

2017-04-12 Published
2017-04-27 First public exploit (EDB-41941)

Exploit prediction

45.65% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-41941 Microsoft Internet Explorer 11.576.14393.0 - 'CStyleSheetArray::BuildListOfMatchedRules' Memory Corruption dos, 2017-04-27

CVSS scores

assigned by	version	score	vector
NVD	3.0	7.5	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	2.0	7.6	AV:N/AC:H/Au:N/C:C/I:C/A:C

Affected products

Microsoft Corporation Internet Explorer

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2017-0202
patch, vendor-advisory
exploit-db.com /exploits/41941/
exploit
securitytracker.com /id/1038238
vdb-entry
securityfocus.com /bid/97441
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-0202
NVD CVE-2017-0202

Fencer Vulns 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