CVE-2026-33524
Published:April 24, 2026
Updated:August 06, 2026
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.
Affected Packages
zserio (CONAN):
Affected version(s) >=2.13.0 <2.18.1Fix Suggestion:
Update to version 2.18.1https://github.com/ndsev/zserio.git (GITHUB):
Affected version(s) >=v1.0.0 <v2.18.1Fix Suggestion:
Update to version v2.18.1io.github.ndsev:zserio-runtime (JAVA):
Affected version(s) >=2.4.2 <2.18.1Fix Suggestion:
Update to version 2.18.1Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Memory Allocation with Excessive Size Value
EPSS
Base Score:
0.32