Buffer overflow in Open62541
CVE-2020-36429
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.5% 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: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/google/oss-fuzz-vulns/blob/main/vulns/open62541/OSV-2020-153.yaml (Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Patch, Third Party Advisory)
- github.com/open62541/open62541/commit/c800e2987b10bb3af6ef644b515b5d6392f8861d (Patch, Third Party Advisory)
- github.com/open62541/open62541/compare/v1.0.3...v1.0.4 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-36429?
- CVE-2020-36429 is a medium-severity vulnerability in Open62541, classified under Out-of-bounds Write. CVSS score: 5.5/10. Published 2021-07-20.
- How severe is CVE-2020-36429?
- Medium severity. CVSS v3 base score is 5.5 out of 10.