Security

Adobe fixed actively exploited zero-day in Acrobat and Reader

Software giant Adobe is warning of a critical security vulnerability in the PDF Acrobat and Reader that is actively exploited in the wild.

Adobe Patch Tuesday security updates (APSB23-34) addressed a critical zero-day vulnerability actively exploited in the wild in attacks on Adobe Acrobat and Reader products.

The vulnerability, tracked as CVE-2023-26369, is an out-of-bounds write memory safety issue that can be exploited to execute arbitrary code on vulnerable installs.

“Adobe has released a security update for Adobe Acrobat and Reader for Windows and macOS. This update addresses a critical vulnerability. Successful exploitation could lead to arbitrary code execution .” reads the advisory

“Adobe is aware that CVE-2023-26369 has been exploited in the wild in limited attacks targeting Adobe Acrobat and Reader.”

The vulnerability affects both Windows and macOS installations. Below is the list of affected versions:

ProductTrackAffected VersionsPlatform
Acrobat DC Continuous
23.003.20284 and earlier versionsWindows &  macOS
Acrobat Reader DCContinuous 23.003.20284 and earlier versions
Windows & macOS


Acrobat 2020Classic 2020 20.005.30516 (Mac) 20.005.30514 (Win)and earlier versions
Windows & macOS
Acrobat Reader 2020Classic 2020 20.005.30516 (Mac)20.005.30514 (Win)and earlier versionsWindows & macOS

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Pierluigi Paganini

(SecurityAffairs – hacking, zero-day)

Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.

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