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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Metrics
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CVE Modified by Adobe Systems Incorporated5/14/2024 5:23:38 AM
Action
Type
Old Value
New Value
CVE Modified by Adobe Systems Incorporated11/06/2023 10:37:47 PM
Action
Type
Old Value
New Value
Removed
CVSS V3.1
Adobe Systems Incorporated AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Added
CVSS V3
Adobe Systems Incorporated AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Initial Analysis by NIST10/06/2021 3:09:54 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Added
CVSS V2
NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Added
CPE Configuration
AND
OR
*cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 20.001.30005 up to (including) 20.004.30006
*cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* versions from (including) 20.001.30005 up to (including) 20.004.30006
OR
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.005.20058
OR
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.005.20058
OR
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.005.20060
OR
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.005.20060
OR
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Changed
Reference Type
https://helpx.adobe.com/security/products/acrobat/apsb21-55.html No Types Assigned
Victim must voluntarily interact with attack mechanism
CVE Modified by Adobe Systems Incorporated10/06/2021 12:15:08 PM
Action
Type
Old Value
New Value
Changed
Description
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An authenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Acrobat Reader DC versions 2021.005.20060 (and earlier), 2020.004.30006 (and earlier) and 2017.011.30199 (and earlier) are affected by a Null pointer dereference vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve an application denial-of-service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
Quick Info
CVE Dictionary Entry: CVE-2021-39853 NVD
Published Date: 09/29/2021 NVD
Last Modified: 06/17/2026
Source: Adobe Systems Incorporated