CVE-2020-16921: Windows Text Services Framework Information Disclosure Vulnerability

Overview

Severity
Medium (CVSS 5.5)
CVSS Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
Category
Information Disclosure
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2020-Oct
Released
2020-10-13
EPSS Score
0.54% (percentile: 67.7%)

Description

An information disclosure vulnerability exists in Text Services Framework when it fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could potentially read data that was not intended to be disclosed. Note that this vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. To exploit this vulnerability, an attacker would have to log on to an affected system and open a specially crafted file. The update addresses the vulnerability by correcting how Text Services Framework handles objects in memory.

FAQ

What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is uninitialized memory.

Affected Products (23)

Other

  • 11497
  • 11498
  • 11563
  • 11568
  • 11569
  • 11570
  • 11571
  • 11572
  • 11712
  • 11713
  • 11714
  • 11715
  • 11453
  • 11454
  • 11583
  • 11644
  • 11645
  • 11646
  • 11647
  • 11766
  • 11767
  • 11768
  • 11769

Security Updates (5)

Acknowledgments

WenQunWang of Codesafe Team of Legendsec at Qi'anxin Group

Revision History

  • 2020-10-13: Information published.