Lucene search

K
kasperskyKaspersky LabKLA12171
HistoryMay 11, 2021 - 12:00 a.m.

KLA12171 ACE vulnerability in Microsoft Browser

2021-05-1100:00:00
Kaspersky Lab
threats.kaspersky.com
28

CVSS2

7.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

8.3

Confidence

High

EPSS

0.937

Percentile

99.1%

A memory corruption vulnerability was found in Microsoft Browser. Malicious users can exploit this vulnerability to execute arbitrary code.

Original advisories

CVE-2021-26419

Exploitation

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Related products

Microsoft-Internet-Explorer

CVE list

CVE-2021-26419 critical

KB list

5003233

5003165

5003209

5003197

5003174

5003208

5003171

5003172

5003169

5003173

Solution

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)

Impacts

  • ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

Affected Products

  • Internet Explorer 9Internet Explorer 11

CVSS2

7.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

8.3

Confidence

High

EPSS

0.937

Percentile

99.1%