CVE-2026-33666

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.

Score
CVSS 3.1 7.5 High
Status
Analyzed - security-advisories@github.com
Published
2026-04-24
Last modified
2026-10-26
Weaknesses
CWE-190

Affected products

References

 
 
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