CVE-2026-33666 — Zserio: Integer Overflow in BitStreamReader on 32-bit platforms
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 s…
Published: 2026-04-24 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7