CVE catalog

CVE-2026-18784

DEBIAN-CVE-2026-18784

[CVE catalog]

Severity
High · CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.17% · Oct 25, 2026

A vulnerability was found in o6 open62541 up to 1.5.5. This issue affects the function UA_Client_readNodeClassAttribute of the file src/client/ua_client_highlevel.c. Performing a manipulation results in heap-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianopen62541131.4.11.1-1vulnerable
Debianopen62541131.4.18-1vulnerable
Debianopen62541141.4.11.1-1vulnerable
Debianopen62541141.4.18-1vulnerable

Fixed-version evidence

OpenFactory catalog packages

[Debian 13 (Trixie)]

  • [libopen62541-1.4]Affected

    Source package: [open62541]

    Details (2)

    • 1.4.11.1-1 · amd64 · trixie

      Affected

      pypi · open62541 · debian · 13

    • 1.4.11.1-1 · arm64 · trixie

      Affected

      pypi · open62541 · debian · 13

  • [libopen62541-1.4-dev]Affected

    Source package: [open62541]

    Details (2)

    • 1.4.11.1-1 · amd64 · trixie

      Affected

      pypi · open62541 · debian · 13

    • 1.4.11.1-1 · arm64 · trixie

      Affected

      pypi · open62541 · debian · 13

  • [libopen62541-1.4-tools]Affected

    Source package: [open62541]

    Details (2)

    • 1.4.11.1-1 · all · trixie

      Affected

      pypi · open62541 · debian · 13

    • 1.4.11.1-1 · all · trixie

      Affected

      pypi · open62541 · debian · 13

Observed:

References

[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]