CVE-2026-81990: Acrobat Reader | Use After Free (CWE-416)

Vulnerability summary

CVE-2026-81990 is a high (CVSS 7.8) Use After Free vulnerability in adobe acrobat. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 31.6% of scored vulnerabilities.

Timeline

1. 08-09-2026
   PublishedVulnerability first disclosed.
2. 09-09-2026
   Last modifiedVulnerability information updated.

Description

Acrobat Reader is affected by a Use After Free 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.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.