Patch Tuesday, April 2026 Edition

Microsoft today pushed software updates to fix a staggering 167 security vulnerabilities in its Windows operating systems and related software, including a SharePoint Server zero-day and a publicly disclosed weakness in Windows Defender dubbed "BlueHammer." Separately, Google Chrome fixed its...

EUVD-2026-22337

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes 'Prototype Pollution' vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of...

EUVD-2026-22335

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 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...

CVE-2026-34622

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 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...

CVE-2026-34626

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes 'Prototype Pollution' vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of...

CVE-2026-34622 Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 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...

CVE-2026-34622

Acrobat Reader is affected by a Prototype Pollution vulnerability (Improperly Controlled Modification of Object Prototype Attributes, CWE-1321). Affected versions include 26.001.21411, 24.001.30360, 24.001.30362 and earlier. The issue could allow arbitrary code execution in the context of the cur...

CVE-2026-34622 Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 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...

CVE-2026-34626 Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes 'Prototype Pollution' vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of...

CVE-2026-34626

Acrobat Reader is affected by CVE-2026-34626: vulnerable versions include 26.001.21411, 24.001.30360, and 24.001.30362 and earlier. The issue is an Improperly Controlled Modification of Object Prototype Attributes (prototype pollution) that could enable arbitrary file system read in the context o...

CVE-2026-34626 Acrobat Reader | Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (CWE-1321)

Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object Prototype Attributes 'Prototype Pollution' vulnerability that could result in arbitrary file system read in the context of the current user. Exploitation of...

About Remote Code Execution - Adobe Reader (CVE-2026-34621) vulnerability

About Remote Code Execution - Adobe Reader CVE-2026-34621 vulnerability. Adobe Acrobat Reader from 2003 to 2015, "Adobe Reader" is a free PDF viewer developed by Adobe. Versions are available for Windows, macOS, Android, and iOS. The remote code execution vulnerability in Adobe Acrobat for Window...

CLSA-2026-1776171616 ImageMagick: Fix of CVE-2025-57803

CVE-2025-57803: fix integer overflow in BMP reader stride computation...

CLSA-2026-1776171379 ImageMagick: Fix of CVE-2025-57803

CVE-2025-57803: fix integer overflow in BMP reader stride computation...

CLSA-2026-1776170814 ImageMagick: Fix of CVE-2025-57803

CVE-2025-57803: fix integer overflow in BMP reader stride computation...

CISA Adds 6 Known Exploited Flaws in Fortinet, Microsoft, and Adobe Software

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Monday added half a dozen security flaws to its Known Exploited Vulnerabilities KEV catalog, citing evidence of active exploitation. The list of vulnerabilities is as follows - CVE-2026-21643 CVSS score: 9.1 - An SQL injection...

PT-2026-32704

Name of the Vulnerable Software and Affected Versions Acrobat Reader versions prior to 26.001.21412 Description An Improperly Controlled Modification of Object Prototype Attributes, also known as Prototype Pollution, allows for arbitrary code execution in the context of the current user. This...

Adobe Reader < 26.001.21431 Multiple Vulnerabilities (APSB26-44) (macOS)

The version of Adobe Reader installed on the remote macOS host is a version prior to 26.001.21431. It is, therefore, affected by multiple vulnerabilities. - Acrobat Reader versions 26.001.21411, 24.001.30360, 24.001.30362 and earlier are affected by an Improperly Controlled Modification of Object...

PT-2026-32705

Name of the Vulnerable Software and Affected Versions Acrobat Reader versions prior to 26.001.21412 Description An Improperly Controlled Modification of Object Prototype Attributes, also known as Prototype Pollution a flaw where an attacker can manipulate the prototype of an object to inject...

Adobe Acrobat Reader 安全漏洞

Adobe Acrobat Reader is a PDF viewer developed by Adobe Inc. This software is used for printing, signing, and annotating PDF documents. Vulnerabilities exist in versions of Adobe Acrobat Reader 26.001.21411 and earlier, as well as versions 24.001.30360 and earlier, and 24.001.30362 and earlier...