Adobe InDesign up to 16.3/16.3.1 TIF File out-of-bounds

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 InDesign up to 16.3/16.3.1. It has been classified as problematic. Affected is an unknown function of the component TIF File Handler. The manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2021-39821. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Adobe InDesign up to 16.3/16.3.1 (Image Processing Software). It has been rated as critical. This issue affects an unknown code block of the component TIF File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 09/30/2021 as apsb21-73. The advisory is shared at helpx.adobe.com. The identification of this vulnerability is CVE-2021-39821 since 08/23/2021. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 209411 (Adobe InDesign 16.0.0 < 16.4.0 Multiple Arbitrary code execution (APSB21-73) (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 (209411). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Image Processing Software

Vendor

Adobe

Name

InDesign

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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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 209411
Nessus Name: Adobe InDesign 16.0.0 < 16.4.0 Multiple Arbitrary code execution (APSB21-73) (macOS)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
09/30/2021 +38 days 🔍
09/30/2021 +0 days 🔍
05/03/2025 +1311 days 🔍

Sourcesinfo

Vendor: adobe.com

Advisory: apsb21-73
Status: Confirmed

CVE: CVE-2021-39821 (🔍)
GCVE (CVE): GCVE-0-2021-39821
GCVE (VulDB): GCVE-100-183545

Entryinfo

Created: 09/30/2021 06:51
Updated: 05/03/2025 07:15
Changes: 09/30/2021 06:51 (50), 10/03/2021 19:49 (1), 10/27/2024 05:03 (16), 05/03/2025 07:15 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.