Denial of Service Vulnerability in Zserio Framework by ndsev
CVE-2026-33524

7.5HIGH

Key Information:

Vendor

Ndsev

Status
Zserio
Vendor
CVE Published:
24 April 2026

What is CVE-2026-33524?

A vulnerability in the Zserio framework allows an attacker to craft a payload as small as 4-5 bytes that can trigger excessive memory allocation, leading to a Denial of Service (DoS) condition. This flaw results in processes crashing due to out-of-memory (OOM) errors. The issue has been addressed in version 2.18.1, where appropriate measures have been put into place to mitigate the risks associated with this vulnerability.

Affected Version(s)

zserio < 2.18.1

References

https://github.com/ndsev/zserio/security/advisories/GHSA-...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.