ClosedPatched

Adobe Acrobat and Reader: Use-After-Free (CVE-2023-21608)

Adobe Acrobat and Reader

Adobe Acrobat and Reader contains a use-after-free vulnerability that allows for code execution in the context of the current user. Added to CISA KEV on 2023-10-10.

Why this severity: CVSS 7.8 (NVD), actively exploited (CISA KEV)

Started: Oct 10, 2023
Closed: Oct 10, 2023
CVE: CVE-2023-21608

Follow this incident

Updated Oct 10, 2023

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Oct 10, 2023
CISA added CVE-2023-21608 to the KEV catalog (due 2023-10-31).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. Exact affected/fixed version strings are not always in the KEV record — verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier).

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