Read the docs
TI-2020-18677 Aliases CVE-2020-36429GHSA-5gjr-fxv3-4mwv

Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.

Priority LOW 25CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Variant_encodeJson in open62541 1.x before 1.0.4 has an out-of-bounds write for a large recursion depth.

Why it matters now

EPSS 0.0031 23rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*1.0.0 to before 1.0.4Vulnerableopen62541
  • cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.0.4 Vulnerable ·open62541

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-36429
  2. 2026-10-03 Alias added: GHSA-5gjr-fxv3-4mwv

References

Patch 3

Advisory 1

  • TI-2022-09335 Denial of service (DoS) in open62541/open62541 CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences