NVD

CVE-2021-28550 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

Description

Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 8.8 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Nist CVSS score does not match with CNA score

CNA: Adobe Systems Incorporated

Base Score: 9.6 CRITICAL

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 6.8 MEDIUM

Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://helpx.adobe.com/security/products/acrobat/apsb21-29.html	Release Notes Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-29.html	Release Notes Vendor Advisory

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name	Date Added	Due Date	Required Action
Adobe Acrobat and Reader Use-After-Free Vulnerability	11/03/2021	11/17/2021	Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	Adobe Systems Incorporated

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

5 change records found show changes

Modified Analysis by NIST 7/29/2024 2:22:37 PM

Action

Type

Old Value

New Value

Changed

CPE Configuration

Record truncated, showing 500 of 643 characters.
View Entire Change Record

AND
     OR
          cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
          cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
     OR
          *cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 17.011.30059 up to (including) 17.011.30194
          *cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 20.001.30005 up to (including) 20.001.30020
          *cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* versions from (including) 17.011.30059 up to (including) 17.

Record truncated, showing 500 of 643 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 17.011.30059 up to (including) 17.011.30194
          *cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:* versions from (including) 20.001.30005 up to (including) 20.001.30020
          *cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* versions from (including) 17.011.30059 up to (including) 17.011.30194
          *cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* versions from (including) 20.001.300

Changed

CPE Configuration

AND
     OR
          cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
     OR
          *cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.001.20150
          *cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.001.20150

AND
     OR
          *cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.001.20150
          *cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* versions from (including) 15.008.20082 up to (including) 21.001.20150
     OR
          cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Initial Analysis by NIST 9/15/2021 9:55:03 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Added	CVSS V2		NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added	CPE Configuration		Record truncated, showing 500 of 643 characters. View Entire Change Record AND OR cpe:2.3:a:adobe:acrobat:::::classic::: versions from (including) 17.011.30059 up to (including) 17.011.30194 cpe:2.3:a:adobe:acrobat:::::classic::: versions from (including) 20.001.30005 up to (including) 20.001.30020 cpe:2.3:a:adobe:acrobat_reader:::::classic::: versions from (including) 17.011.30059 up to (including) 17.011.30194 cpe:2.3:a:adobe:acrobat_reader:::::classic::: versions from (including) 20.001.300
Added	CPE Configuration		AND OR cpe:2.3:a:adobe:acrobat_dc:::::continuous::: versions from (including) 15.008.20082 up to (including) 21.001.20150 cpe:2.3:a:adobe:acrobat_reader_dc:::::continuous::: versions from (including) 15.008.20082 up to (including) 21.001.20150 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) 21.001.20150 cpe:2.3:a:adobe:acrobat_reader_dc:::::continuous::: versions from (including) 15.008.20082 up to (including) 21.001.20150 OR cpe:2.3:o:microsoft:windows:-:::::::*
Changed	Reference Type	https://helpx.adobe.com/security/products/acrobat/apsb21-29.html No Types Assigned	https://helpx.adobe.com/security/products/acrobat/apsb21-29.html Release Notes, Vendor Advisory
Added	CVSS V2 Metadata		Victim must voluntarily interact with attack mechanism

Quick Info

CVE Dictionary Entry:
CVE-2021-28550
NVD Published Date:
09/02/2021
NVD Last Modified:
11/21/2024
Source:
Adobe Systems Incorporated

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2021-28550 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CVE 11/21/2024 12:59:49 AM

Modified Analysis by NIST 7/29/2024 2:22:37 PM

CVE Modified by Adobe Systems Incorporated 5/14/2024 4:43:08 AM

CVE Modified by Adobe Systems Incorporated 11/06/2023 10:32:10 PM

Initial Analysis by NIST 9/15/2021 9:55:03 AM

Quick Info