Vulnerability Monitor

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CVE-2021-39855

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 open a maliciously crafted Microsoft Office file, or visit an attacker controlled web page.

Published

2021-09-29T16:15:10.423

Last Modified

2024-11-21T06:20:23.537

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-200
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application adobe acrobat ≤ 17.011.30199 Yes
Application adobe acrobat_reader ≤ 17.011.30199 Yes
Operating System apple macos - No
Operating System microsoft windows - No
Application adobe acrobat ≤ 20.004.30006 Yes
Application adobe acrobat_reader ≤ 20.004.30006 Yes
Operating System apple macos - No
Operating System microsoft windows - No
Application adobe acrobat_dc ≤ 21.005.20058 Yes
Application adobe acrobat_reader_dc ≤ 21.005.20058 Yes
Operating System apple macos - No
Application adobe acrobat_dc ≤ 21.005.20060 Yes
Application adobe acrobat_reader_dc ≤ 21.005.20060 Yes
Operating System microsoft windows - No
References