All vulnerabilities
CVE-2026-34621

Adobe Acrobat and Reader Prototype Pollution Vulnerability

Adobe Acrobat and ReaderApplications & CMS
Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationExploited in the wildAdded to KEV 13 Apr 2026CISA KEV
Exploit odds (EPSS)2.18%Chance of exploitation activity in the next 30 days, higher than 82% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline27 Apr 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 11 Apr 2026, 06:45 UTCPublishedCVE List
  2. 13 Apr 2026Added to CISA KEVCISA KEV

Description

Adobe Acrobat and Reader contain a prototype pollution vulnerability that allows for arbitrary code execution.

Text from CVE List

Affected versions 6

  • Acrobat DCaffected: all versions through 26.001.21367CVE List
  • Acrobat DCunaffected: 26.001.21411CVE List
  • Acrobat Reader DCaffected: all versions through 26.001.21367CVE List
  • Acrobat Reader DCunaffected: 26.001.21411CVE List
  • Acrobat 2024affected: all versions through 24.001.30356CVE List
  • Acrobat 2024unaffected: 24.001.30362 (Win), 24.001.30360 (Mac)CVE List

References 3