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.

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History

Tue, 28 Apr 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Ndsev
Ndsev zserio
Vendors & Products Ndsev
Ndsev zserio

Mon, 27 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 24 Apr 2026 18:30:00 +0000

Type Values Removed Values Added
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.
Title Zserio: Integer Overflow in BitStreamReader and Unbounded Memory Allocation in Deserialization
Weaknesses CWE-789
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-27T13:35:28.660Z

Reserved: 2026-03-20T18:05:11.829Z

Link: CVE-2026-33524

cve-icon Vulnrichment

Updated: 2026-04-27T13:20:22.417Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-24T19:17:09.850

Modified: 2026-04-27T18:57:20.293

Link: CVE-2026-33524

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T09:17:54Z

Weaknesses