VULNERABILITY INTELLIGENCE

CVE-2021-39856

CVSS score6.5 MEDIUM
EPSS probability2.36%
CISA KEVNot currently listed
Published2021-09-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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.

Weakness classification

  • psirt@adobe.com: CWE-200

Primary references