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Adobe Acrobat Reader CVE-2026-81990

| EUVDEUVD-2026-74111 HIGH
Use After Free (CWE-416)
2026-09-08 psirt@adobe.com GHSA-vrxv-297c-8399
7.8
CVSS 3.1 · Vendor: adobe
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Severity by source

Vendor (adobe) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

File-open trigger sets AV:L/UI:R; no privilege or complexity barrier once file is opened; full triad impact consistent with RCE in user context.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (adobe).

CVSS VectorVendor: adobe

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Sep 08, 2026 - 21:51 vuln.today
CVE Published
Sep 08, 2026 - 21:18 nvd
HIGH 7.8

DescriptionCVE.org

Acrobat Reader is affected by a Use After Free 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

Use-After-Free in Adobe Acrobat Reader and Adobe Acrobat allows arbitrary code execution in the security context of the current user upon opening a specially crafted PDF file. Affected versions span Acrobat Reader up to 26.002.21900 and Acrobat 2024 up to 24.001.30383, as documented in Adobe advisory APSB26-141. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires that a victim running an affected version of Adobe Acrobat Reader or Adobe Acrobat (≤26.002.21900 continuous track or ≤24.001.30383 Acrobat 2024) actively opens an attacker-supplied malicious PDF file - this user-interaction step (UI:R) is the sole prerequisite. … 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) correctly captures that exploitation is local-file-based - the victim's PDF client must open the document - but 'local' is misleading in practice: PDF files are a primary phishing payload delivered via email and web, so the effective reach is near-network-level for social engineering campaigns. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor-released update documented in Adobe security bulletin APSB26-141 (https://helpx.adobe.com/security/products/acrobat/apsb26-141.html), which addresses versions beyond 26.002.21900 for the continuous track and 24.001.30383 for the Acrobat 2024 classic track - users should update to the next released version above those thresholds as identified in the advisory. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all systems running Acrobat Reader version 26.002.21900 or earlier and Acrobat 2024 version 24.001.30383 or earlier, assess criticality to business operations, and brief stakeholders on attack vectors via social engineering and suspicious email. …

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CVE-2026-81990 vulnerability details – vuln.today

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