CRITICALExploited in the wildUnknown

Adobe Acrobat and Reader Prototype Pollution Vulnerability

https://helpx.adobe.com/security/products/acrobat/apsb26-43.html ; https://nvd.nist.gov/vuln/detail/CVE-2026-34621

CVE-2026-34621Published 3 months agoSource: CISA KEV

Affected packages

No package-level mapping for this advisory.

Exploit signal

Known exploited (CISA KEV)
Yes
EPSS score
7.09%
EPSS percentile
93.6%

EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 94%.

Sources

No external sources available.

Recommended response stack

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Adobe Acrobat and Reader Prototype Pollution Vulnerability | HackTribune