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CVE-2026-58080

8.2 HIGHpublic exploit available

Published 2026-08-04 · Updated 2026-08-05

AI risk analysis

Summary
The flaw allows an anonymous client to read role-permission metadata, invoke protected methods, or delete protected nodes on servers that rely on role permissions and use the `copy()` method to construct the running configuration, potentially leading to unauthorized access.
Exploitability
Exploitation is moderately hard as it requires the server to use the `copy()` method and have anonymous sessions permitted. Precondition is the presence of role permissions on the server.
Blast radius
If exploited, the impact could be significant, as it allows unauthorized access to protected nodes and methods, potentially leading to data theft or system compromise.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to Eclipse Milo version 1.1.5 or later.
auth-bypassicsconfig-flaw

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

In Eclipse Milo versions 1.0.0 through 1.1.4, `OpcUaServerConfig.copy()` fails to preserve a configured `RoleMapper`. On servers that rely on role permissions and construct the running configuration through `copy()`, sessions receive no role IDs and the default access controller skips role-permission checks, allowing an anonymous client where anonymous sessions are permitted to read role-permission metadata, invoke protected methods, or delete protected nodes.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Weaknesses

CWE-862

Vendors

eclipse

Products

milo

Public exploit & PoC references

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.