🛡️ CVE-2026-18785 on Debian — open62541

Distribution advisory

This page covers CVE-2026-18785 as tracked by Debian, for the package open62541. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

• Attack vector: Local — a local account, shell or session on the host is needed.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Attack requirements: None — no deployment-specific condition has to hold.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

DEBIAN-CVE-2026-18785 is classified as CWE-119: Improper Restriction of Operations within Memory Buffer Bounds. A read or write is performed without confirming it stays inside the allocated buffer, corrupting adjacent memory.

Affected software

DEBIAN-CVE-2026-18785 is recorded against 1 package.

• open62541

Timeline and source

Published on 4 August 2026 and last revised on 13 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

Other advisories for this package

open62541 has other advisories on record. If you are patching this one, these are worth checking on the same host:

• DEBIAN-CVE-2026-67870 (published 6 Aug 2026)
• DEBIAN-CVE-2026-67869 (published 6 Aug 2026)
• UBUNTU-CVE-2026-67870 (published 6 Aug 2026)
• UBUNTU-CVE-2026-67869 (published 6 Aug 2026)
• DEBIAN-CVE-2026-67864 (published 5 Aug 2026)
• DEBIAN-CVE-2026-67863 (published 5 Aug 2026)
• UBUNTU-CVE-2026-67864 (published 5 Aug 2026)
• UBUNTU-CVE-2026-67863 (published 5 Aug 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-119: Improper Restriction of Operations within Memory Buffer Bounds) in other software:

• CVE-2017-12601 (8.0 High, published 9 Jul 2026)
• CVE-2017-12862 (8.0 High, published 9 Jul 2026)
• CVE-2022-1941 (8.0 High, published 7 Jul 2026)
• CVE-2013-4179 (published 6 Jul 2026)
• CVE-2013-4155 (published 6 Jul 2026)
• CVE-2013-0270 (published 2 Jul 2026)
• CVE-2022-33162 (7.3 High, published 16 Aug 2024)
• CVE-2022-33267 (6.7 Medium, published 6 Jun 2023)

Details

Affected Packages

References