Adobe Character Animator up to 4.4 M4A File Parser memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Adobe Character Animator up to 4.4. It has been declared as critical. This affects an unknown function of the component M4A File Parser. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2021-40765. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Adobe Character Animator up to 4.4. It has been rated as critical. Affected by this issue is some unknown processing of the component M4A File Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was released 03/16/2022 as apsb21-95. The advisory is shared for download at helpx.adobe.com. This vulnerability is handled as CVE-2021-40765 since 09/08/2021. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 209377 (Adobe Character Animator 4.0.0 < 4.4.2 Multiple Vulnerabilities (APSB21-95) (macOS)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (209377). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Adobe

Name

Character Animator

Version

License

commercial

Website

Vendor: https://www.adobe.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.8
CNA Vector (Adobe Systems Incorporated): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 209377
Nessus Name: Adobe Character Animator 4.0.0 < 4.4.2 Multiple Vulnerabilities (APSB21-95) (macOS)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/08/2021 🔍
03/16/2022 +189 days 🔍
03/16/2022 +0 days 🔍
05/01/2025 +1142 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: apsb21-95
Status: Confirmed

CVE: CVE-2021-40765 (🔍)
GCVE (CVE): GCVE-0-2021-40765
GCVE (VulDB): GCVE-100-195236

Entryinfo

Created: 03/16/2022 20:51
Updated: 05/01/2025 13:54
Changes: 03/16/2022 20:51 (49), 03/19/2022 09:18 (1), 10/21/2024 20:05 (16), 05/01/2025 13:54 (3)
Complete: 🔍
Cache ID: 216::103