CVE-2020-36429
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion...
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
- Record
CVE-2020-36429- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 2.1 Low
AV:L/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List No score
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
- Record
CVE-2020-36429- Updated
- 2026-11-02
EUVDEUVD-2020-23957 No score
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
- Record
EUVD-2020-23957- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-5gjr-fxv3-4mwv No score
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion...
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
- Record
GHSA-5gjr-fxv3-4mwv- Weakness
- CWE-787
- Updated
- 2026-11-02
OSV
Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.
- Record
CVE-2020-36429- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-36429 is a medium vulnerability (CVSS 5.5) in Open62541, published July 20, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 23rd percentile. No source names a fixed version.
References
github.com/google/oss-fuzz-vulns/blob/main/vulns/open62541/OSV-2020-153.yaml
bugs.chromium.org/p/oss-fuzz/issues/detail?id=20578
nvd.nist.gov/vuln/detail/CVE-2020-36429