// For flags

CVE-2021-21086

Adobe Reader CoolType Arbitrary Stack Manipulation

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Out-of-bounds Write vulnerability in the CoolType library. 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 2020.013.20074 (y anteriores), versiones 2020.001.30018 (y anteriores) y versiones 2017.011.30188 (y anteriores), están afectadas por una vulnerabilidad de escritura fuera de límites en la biblioteca CoolType. Un atacante no autenticado podría aprovechar esta vulnerabilidad para lograr una ejecución de código arbitrario en el contexto del usuario actual. Es requerida una interacción del usuario para explotar este problema, ya que la víctima debe abrir un archivo malicioso

Adobe Reader suffers from a CoolType arbitrary stack manipulation vulnerability.

*Credits: N/A
CVSS Scores
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
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-18 CVE Reserved
  • 2021-03-18 CVE Published
  • 2021-12-02 First Exploit
  • 2024-09-17 CVE Updated
  • 2024-09-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-787: Out-of-bounds Write
CAPEC
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
Search vendor "Adobe" for product "Acrobat"
>= 17.011.30056 <= 17.011.30188
Search vendor "Adobe" for product "Acrobat" and version " >= 17.011.30056 <= 17.011.30188"
classic
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat
Search vendor "Adobe" for product "Acrobat"
>= 17.011.30056 <= 17.011.30188
Search vendor "Adobe" for product "Acrobat" and version " >= 17.011.30056 <= 17.011.30188"
classic
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat
Search vendor "Adobe" for product "Acrobat"
>= 20.001.30005 <= 20.001.30018
Search vendor "Adobe" for product "Acrobat" and version " >= 20.001.30005 <= 20.001.30018"
classic
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat
Search vendor "Adobe" for product "Acrobat"
>= 20.001.30005 <= 20.001.30018
Search vendor "Adobe" for product "Acrobat" and version " >= 20.001.30005 <= 20.001.30018"
classic
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Dc
Search vendor "Adobe" for product "Acrobat Dc"
>= 20.006.20042 <= 20.013.20074
Search vendor "Adobe" for product "Acrobat Dc" and version " >= 20.006.20042 <= 20.013.20074"
continuous
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Dc
Search vendor "Adobe" for product "Acrobat Dc"
>= 20.006.20042 <= 20.013.20074
Search vendor "Adobe" for product "Acrobat Dc" and version " >= 20.006.20042 <= 20.013.20074"
continuous
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Reader
Search vendor "Adobe" for product "Acrobat Reader"
>= 17.011.30059 <= 17.011.30188
Search vendor "Adobe" for product "Acrobat Reader" and version " >= 17.011.30059 <= 17.011.30188"
classic
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Reader
Search vendor "Adobe" for product "Acrobat Reader"
>= 17.011.30059 <= 17.011.30188
Search vendor "Adobe" for product "Acrobat Reader" and version " >= 17.011.30059 <= 17.011.30188"
classic
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Reader
Search vendor "Adobe" for product "Acrobat Reader"
>= 20.001.30005 <= 20.001.300183
Search vendor "Adobe" for product "Acrobat Reader" and version " >= 20.001.30005 <= 20.001.300183"
classic
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Reader
Search vendor "Adobe" for product "Acrobat Reader"
>= 20.001.30005 <= 20.001.300183
Search vendor "Adobe" for product "Acrobat Reader" and version " >= 20.001.30005 <= 20.001.300183"
classic
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Reader Dc
Search vendor "Adobe" for product "Acrobat Reader Dc"
>= 20.006.20042 <= 20.013.20074
Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 20.006.20042 <= 20.013.20074"
continuous
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Adobe
Search vendor "Adobe"
Acrobat Reader Dc
Search vendor "Adobe" for product "Acrobat Reader Dc"
>= 20.006.20042 <= 20.013.20074
Search vendor "Adobe" for product "Acrobat Reader Dc" and version " >= 20.006.20042 <= 20.013.20074"
continuous
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe