Netskope Threat Labs

FILE-PDF Adobe Acrobat Reader JPEG2000 out of bounds read attempt

IPS-SWG

1 SID: 47969

First seen
March 2022
Last seen
October 2026

Detects a PDF exploiting CVE-2018-12839, an out-of-bounds read in Adobe Acrobat Reader's JPEG2000 decoding that can leak memory. The rule matches the crafted image streams that public exploits use to read beyond allocated buffers.