High severity8.6CISA KEVNVD Advisory· Published Apr 11, 2026· Updated Apr 13, 2026
CVE-2026-34621
CVE-2026-34621
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.
Affected products
3- cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*Range: <26.001.21411
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- helpx.adobe.com/security/products/acrobat/apsb26-43.htmlnvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
4- Foxit, LibRaw vulnerabilitiesCisco Talos Intelligence · Apr 16, 2026
- The Q1 vulnerability pulseCisco Talos Intelligence · Apr 16, 2026
- Risky Business #833 -- The Great Mythos Freakout of 2026Risky Business · Apr 15, 2026
- Microsoft Patch Tuesday, March 2026 EditionKrebs on Security · Mar 11, 2026