EUVD-2026-35783
GHSA-2cm9-pghr-m2c8
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionCVE.org
InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow 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.
AnalysisAI
Arbitrary code execution in Adobe InDesign Desktop 21.3, 20.5.3 and earlier occurs when a user opens a maliciously crafted document, triggering a stack-based buffer overflow (CWE-121) that runs attacker code in the context of the current user. Adobe issued advisory APSB26-58 for this issue; no public exploit identified at time of analysis and the vulnerability is not listed in CISA KEV.
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Victim must open a malicious InDesign document (INDD/IDML or related supported format) in Adobe InDesign Desktop 21.3, 20.5.3 or earlier - the CVE description explicitly requires that 'a victim must open a malicious file,' matching CVSS UI:R. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.8 vector (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) reflects a classic client-side file-parsing bug: local attack vector because the malicious file must be processed on the victim host, low complexity, no privileges required by the attacker, but user interaction (opening the file) is mandatory. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker emails a graphic designer a tailored INDD or IDML file masquerading as a vendor brief or freelance brand kit; when the recipient double-clicks the attachment, InDesign parses the malformed structure, the stack buffer overflows, and shellcode runs as the logged-in user. The attacker then steals saved cloud credentials and intellectual property from the user's profile or pivots into the corporate network. … |
| Remediation | Apply the patched InDesign Desktop releases identified in Adobe Security Bulletin APSB26-58 (https://helpx.adobe.com/security/products/indesign/apsb26-58.html) - update the 21.x branch past 21.3 and the 20.x branch past 20.5.3 using Creative Cloud Desktop or enterprise deployment tooling; exact fix version numbers should be confirmed against the linked advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
24 hours: Identify and inventory all InDesign Desktop installations on versions 21.3 or earlier; notify InDesign users and advise against opening documents from untrusted sources pending patch availability. …
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External POC / Exploit Code
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