CVE Explorer
CVE-2026-18257
Improper validity period check for root issuer certificate in CycloneCrypto cryptographic wrapper of S2OPC allows a certificate issued by this root issuer to be considered trusted
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"S2OPC","vendor":"Systerel","versions":[{"lessThan":"2.0.0","status":"affected","version":"1.5.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:6eac0e6fcba7e3a087d38a4b1c264ba471b69cfc489882963eb356d8cb474518 · sha256:507e9c46baddf0b8… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:6eac0e6fcba7e3a087d38a4b1c264ba471b69cfc489882963eb356d8cb474518 · sha256:507e9c46baddf0b8… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-295","description":"CWE-295: Improper Certificate Validation","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:6eac0e6fcba7e3a087d38a4b1c264ba471b69cfc489882963eb356d8cb474518 · sha256:507e9c46baddf0b8… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://gitlab.com/systerel/S2OPC/-/work_items/1804"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:6eac0e6fcba7e3a087d38a4b1c264ba471b69cfc489882963eb356d8cb474518 · sha256:507e9c46baddf0b8… · /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.