CVE Record
[ HIGH ]CVE-2023-21608
Adobe Acrobat and Reader Use-After-Free Vulnerability
Adobe Acrobat and Reader contains a use-after-free vulnerability that allows for code execution in the context of the current user.
- Vendor
- Adobe
- Product
- Acrobat and Reader
- CVSS
- 7.8
- EPSS (exploit probability)
- 59.4%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2023-21608 being exploited?
Yes. CISA added CVE-2023-21608 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 59.4% (scored October 18, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-19. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Adobe Acrobat and Reader CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2009-3459 Adobe Acrobat and Reader Heap-Based Buffer Overflow Vulnerability | [ HIGH ] | 8.8 | 86.6% | |
| CVE-2026-34621 Adobe Acrobat and Reader Prototype Pollution Vulnerability | [ HIGH ] | 8.6 | 2.2% | |
| CVE-2023-26369 Adobe Acrobat and Reader Out-of-Bounds Write Vulnerability | [ HIGH ] | 7.8 | 6.7% | |
| CVE-2018-4990 Adobe Acrobat and Reader Double Free Vulnerability | [ HIGH ] | 8.8 | 36.2% | |
| CVE-2011-2462 Adobe Reader and Acrobat Universal 3D Memory Corruption Vulnerability | [ CRITICAL ] | 9.8 | 88.9% | |
| CVE-2010-2883 Adobe Acrobat and Reader Stack-Based Buffer Overflow Vulnerability | [ HIGH ] | 7.3 | 81.4% | |
| CVE-2009-4324 Adobe Acrobat and Reader Use-After-Free Vulnerability | [ HIGH ] | 7.8 | 81.9% | |
| CVE-2009-3953 Adobe Acrobat and Reader Universal 3D Remote Code Execution Vulnerability | [ HIGH ] | 8.8 | 83.2% |