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.
MSRC compact vulnerability detail
CVE-2020-16921 · Windows Text Services Framework Information Disclosure Vulnerability
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.
Signals
Microsoft Windows
Unknown impact
Exploited: No
Publicly disclosed: No
Exploitability: Exploitation Less Likely
CWE
No CWE data published.
Patch Diff
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Resolved binary override
Use this when the MSRC module name cannot be mapped automatically or the resolved binary looks wrong.
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.
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