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CVE-2021-39856

MEDIUM CVSS: 6.5 Published: 2021-09-29 Modified: 2026-06-17

Description

Acrobat Reader DC ActiveX Control versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by an Information Disclosure vulnerability. An unauthenticated attacker could leverage this vulnerability to obtain NTLMv2 credentials. Exploitation of this issue requires user interaction in that a victim must visit an attacker controlled web page.

Affected Platforms

Adobe AcrobatMicrosoft WindowsAdobe Acrobat ReaderAdobe Acrobat Reader DcAdobe Acrobat DcApple Macos

Weakness Type

CWE-200

References