CVE-2021-28635

Adobe Acrobat Reader Use-After-Free Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (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.

Acrobat Reader DC versiones 2021.005.20054 (y anteriores), 2020.004.30005 (y anteriores), y 2017.011.30197 (y anteriores), están afectadas por una vulnerabilidad de uso de memoria previamente liberada. Un atacante no autenticado podría aprovechar esta vulnerabilidad para lograr una ejecución de código arbitrario en el contexto del usuario actual. Una explotación de este problema requiere una interacción del usuario, ya que la víctima debe abrir un archivo malicioso.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-03-16 CVE Reserved
2021-08-20 CVE Published
2024-07-01 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://helpx.adobe.com/security/products/acrobat/apsb21-51.html	2021-08-31

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Adobe Search vendor "Adobe"		Acrobat Dc Search vendor "Adobe" for product "Acrobat Dc"				>= 15.008.20082 <= 21.005.20054 Search vendor "Adobe" for product "Acrobat Dc" and version " >= 15.008.20082 <= 21.005.20054"		continuous		Affected
Adobe Search vendor "Adobe"		Acrobat Dc Search vendor "Adobe" for product "Acrobat Dc"				>= 17.011.30059 <= 17.011.30197 Search vendor "Adobe" for product "Acrobat Dc" and version " >= 17.011.30059 <= 17.011.30197"		classic		Affected
Adobe Search vendor "Adobe"		Acrobat Dc Search vendor "Adobe" for product "Acrobat Dc"				>= 20.001.30005 <= 20.004.30005 Search vendor "Adobe" for product "Acrobat Dc" and version " >= 20.001.30005 <= 20.004.30005"		classic		Affected
Adobe Search vendor "Adobe"		Acrobat Reader Dc Search vendor "Adobe" for product "Acrobat Reader Dc"				>= 15.008.20082 <= 21.005.20054 Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 15.008.20082 <= 21.005.20054"		continuous		Affected
Adobe Search vendor "Adobe"		Acrobat Reader Dc Search vendor "Adobe" for product "Acrobat Reader Dc"				>= 17.011.30059 <= 17.011.30197 Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 17.011.30059 <= 17.011.30197"		classic		Affected
Adobe Search vendor "Adobe"		Acrobat Reader Dc Search vendor "Adobe" for product "Acrobat Reader Dc"				>= 20.001.30005 <= 20.004.30005 Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 20.001.30005 <= 20.004.30005"		classic		Affected