CVE-2018-7559
OPC UA applications can allow a remote attacker to determine a Server's private key
5.3
MEDIUM
CVSS 3.1
EPSS 0.27%
Description
An issue was discovered in OPC UA .NET Standard Stack and Sample Code before GitHub commit 2018-04-12, and OPC UA .NET Legacy Stack and Sample Code before GitHub commit 2018-03-13. A vulnerability in OPC UA applications can allow a remote attacker to determine a Server's private key by sending carefully constructed bad UserIdentityTokens as part of an oracle attack.
How to fix CVE-2018-7559
To remediate CVE-2018-7559, upgrade the affected package to a fixed version below.
- —upgrade to 1.3.352.12 or later
Is CVE-2018-7559 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.3.352.12
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |