Adobe InDesign Desktop up to 19.5.5/21.0 File uninitialized pointer

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6.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Adobe InDesign Desktop up to 19.5.5/21.0. It has been classified as critical. The affected element is an unknown function of the component File Handler. Performing a manipulation results in uninitialized pointer. This vulnerability was named CVE-2026-21276. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Adobe InDesign Desktop up to 19.5.5/21.0. It has been classified as critical. This affects an unknown code block of the component File Handler. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. CWE is classifying the issue as CWE-824. The product accesses or uses a pointer that has not been initialized. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

InDesign Desktop versions 21.0, 19.5.5 and earlier are affected by an Access of Uninitialized Pointer vulnerability that could result in 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.

It is possible to read the advisory at helpx.adobe.com. This vulnerability is uniquely identified as CVE-2026-21276 since 12/12/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 283679 (Adobe InDesign < 20.5.1 / 21.0 < 21.1.0 Multiple Vulnerabilities (APSB26-02) (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 (283679). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Image Processing Software

Vendor

Adobe

Name

InDesign Desktop

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): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 283679
Nessus Name: Adobe InDesign < 20.5.1 / 21.0 < 21.1.0 Multiple Vulnerabilities (APSB26-02) (macOS)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/12/2025 CVE reserved
01/13/2026 +32 days Advisory disclosed
01/13/2026 +0 days VulDB entry created
01/14/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: adobe.com

Advisory: apsb26-02
Status: Confirmed

CVE: CVE-2026-21276 (🔒)
GCVE (CVE): GCVE-0-2026-21276
GCVE (VulDB): GCVE-100-340863

Entryinfo

Created: 01/13/2026 20:12
Updated: 01/14/2026 19:21
Changes: 01/13/2026 20:12 (64), 01/14/2026 19:21 (2)
Complete: 🔍
Cache ID: 216::103