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CVE-2026-34621

Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

Published
Last modified
published
Listed in CISA KEV
None on Exploit-DB, Metasploit or GitHub

Summary

Adobe Acrobat Reader is affected by a flaw in which attributes of core object prototypes can be improperly modified. A successful attack could allow an attacker to run arbitrary code with the privileges of the current user, but only if the user opens a malicious file.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

Acrobat Reader versions 24.001.30356, 26.001.21367 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') 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.

Timeline

  1. CVE published
  2. Added to CISA KEV

    CISA has evidence of exploitation in the wild

  3. CISA remediation deadline

    Due date for US federal agencies to patch

  4. Record last updated

Affected versions

  • Adobe Acrobat DC

    through 26.001.21367

  • Adobe Acrobat Reader DC

    through 26.001.21367

  • Adobe Acrobat 2024

    through 24.001.30356

References 1

helpx.adobe.com