Security Advisory

CVE-2026-33666

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-24 18:21:11
Last updated 2026-04-27 13:46:01
Assigner GitHub_M
State PUBLISHED

Description

Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, in BitStreamReader.h readBytes() / readString(), the setBitPosition() bounds check receives the overflowed value and is completely bypassed. The code then reads len bytes (512 MB) from a buffer that is only a few bytes long, causing a segmentation fault. This vulnerability is fixed in 2.18.1.