VulnerabilityBleeping Computer
8.6 — CRITICAL
Adobe rolls out emergency fix for Acrobat, Reader zero-day flaw
Adobe has released an emergency security update for Acrobat Reader to fix a vulnerability, tracked as CVE-2026-34621, that has been exploited in zero-day attacks since at least December. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
Adobe has released an emergency security update for Acrobat Reader to fix a zero-day vulnerability, CVE-2026-34621, that has been exploited in attacks since at least December, posing a high risk to users of affected systems.
⚙️Technical Details
CVEs
CVE-2026-34621
Affected Systems
Adobe AcrobatApple MacOSMicrosoft Windows
Attack Vectors
AV:L/AC:L
💥Impact Assessment
Severity: c
Who Is at Risk
Users of affected systems, including Adobe Acrobat users
🛡️Recommended Actions
1Immediately update to the latest version of Adobe Acrobat Reader
2Disable macros in Adobe Acrobat Reader until further notice
3Monitor system logs for suspicious activity related to Adobe Acrobat Reader
📦Affected Products
Adobe AcrobatAdobe Acrobat DcAdobe Acrobat Reader DcApple MacosMicrosoft WindowsApple MacOS
🔐NVD Verified DataVERIFIED
CVE-2026-34621 ↗CVSS 8.6 — HIGH
Attack Vector
LOCAL
Complexity
LOW
Vector String
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HWeaknesses
CWE-1321
Affected Products (CPE)
Adobe AcrobatAdobe Acrobat DcAdobe Acrobat Reader DcApple MacosMicrosoft Windows
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