CVE Explorer
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.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"zserio","vendor":"ndsev","versions":[{"status":"affected","version":"< 2.18.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:46619f15ab843d168ac5f39bef0ed51512863a4dc3e62db9098090d4d4d5a329 · sha256:04557c97a82d68a1… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:46619f15ab843d168ac5f39bef0ed51512863a4dc3e62db9098090d4d4d5a329 · sha256:04557c97a82d68a1… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:46619f15ab843d168ac5f39bef0ed51512863a4dc3e62db9098090d4d4d5a329 · sha256:04557c97a82d68a1… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/ndsev/zserio/security/advisories/GHSA-cwq5-8pvq-j65j"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:46619f15ab843d168ac5f39bef0ed51512863a4dc3e62db9098090d4d4d5a329 · sha256:04557c97a82d68a1… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.