⚠ Actively exploited
Added to CISA KEV on 2021-11-03. Federal agencies required to patch by 2022-05-03. Required action: Apply updates per vendor instructions..
Severity
8.8HIGH
EPSS
91.7%
top 0.31%
CISA KEV
KEV
Added 2021-11-03
Due 2022-05-03
Exploit
Exploited in wild
Active exploitation observed
Timeline
PublishedAug 17
KEV addedNov 3
KEV dueMay 3
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited the vulnerability co

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages2 packages

CVEListV5microsoft/internet_explorer_111.0.0publication

Patches

🔴Vulnerability Details

5
GHSA
GHSA-vvf5-mpj5-q4jf: A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engin2022-05-24
CVEList
Scripting Engine Memory Corruption Vulnerability2020-08-17
VulnCheck
Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability2020
Project0
Project Zero RCA: CVE-2020-0986: Windows splwow64 Untrusted Pointer Dereference
Project0
Project Zero RCA: CVE-2020-1380: Internet Explorer JScript9 Use-after-Free

📋Vendor Advisories

2
CISA
Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability2021-11-03
Microsoft
Scripting Engine Memory Corruption Vulnerability2020-08-11

🕵️Threat Intelligence

13
Trendmicro
Cinobi Banking Trojan Targets Cryptocurrency Exchange Users via Malvertising2021-08-09
Trendmicro
CVE-2020-17053: Use-After-Free IE Vulnerability2020-11-17
Trendmicro
CVE-2020-17053: Use-After-Free IE Vulnerability2020-11-17
Trendmicro
CVE-2020-17053: Use-After-Free IE Vulnerability2020-11-17
Trendmicro
CVE-2020-17053: Use-After-Free IE Vulnerability2020-11-17