VULNERABILITY INTELLIGENCE

CVE-2026-33524

CVSS score7.5 HIGH
EPSS probability0.32%
CISA KEVNot currently listed
Published2026-04-24
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, a crafted payload as small as 4-5 bytes can force memory allocations of up to 16 GB, crashing any process with an OOM error (Denial of Service). This vulnerability is fixed in 2.18.1.

Weakness classification

  • security-advisories@github.com: CWE-789

Primary references