Vulnerability in Nds-Association Zserio
CVE-2026-33524
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Nds-Association Zserio
- Ndsev Zserio — versions < 2.18.1
Weakness classification (CWE)
References
- github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65j (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-33524?
- CVE-2026-33524 is a high-severity vulnerability in Nds-Association Zserio, classified under CWE-789. CVSS score: 7.5/10. Published 2026-04-24.
- How severe is CVE-2026-33524?
- High severity. CVSS v3 base score is 7.5 out of 10.