| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.4 | $0-$5k | 0.00 |
Summary
A vulnerability described as critical has been identified in Adobe InDesign up to 16.3/16.3.1. This issue affects some unknown processing of the component TIFF File Handler. Executing a manipulation can lead to buffer overflow. This vulnerability appears as CVE-2021-39820. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.
Details
A vulnerability was found in Adobe InDesign up to 16.3/16.3.1 (Image Processing Software). It has been declared as critical. This vulnerability affects an unknown code block of the component TIFF File Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
Adobe InDesign versions 16.3 (and earlier), and 16.3.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious TIFF file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.
The weakness was presented 06/16/2022 as apsb21-73. The advisory is shared for download at helpx.adobe.com. This vulnerability was named CVE-2021-39820 since 08/23/2021. 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 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). Once again VulDB remains the best source for vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.adobe.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.6VulDB Meta Temp Score: 7.4
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CNA Base Score: 8.8
CNA Vector (Adobe Systems Incorporated): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Buffer overflowCWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| 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 Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
08/23/2021 🔍06/16/2022 🔍
06/16/2022 🔍
04/30/2025 🔍
Sources
Vendor: adobe.comAdvisory: apsb21-73
Status: Confirmed
CVE: CVE-2021-39820 (🔍)
GCVE (CVE): GCVE-0-2021-39820
GCVE (VulDB): GCVE-100-202228
Entry
Created: 06/16/2022 09:50Updated: 04/30/2025 18:59
Changes: 06/16/2022 09:50 (51), 10/27/2024 05:03 (16), 04/30/2025 18:59 (3)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.

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