CVE-2026-33666
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductNds-association Zserio
PublishedApr 24, 2026
First seenApr 24, 2026
Weakness typeCWE-190Integer overflow
How to fix
Update
- nds-association zserio2.18.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nds-association zserio | v < 2.18.1 | 2.18.1 |
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