CVE-2026-24349

Name: CVE-2026-24349
Creator: NVD / NIST
Published: 2026-06-09T10:16:42.967+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.06%

Last modified Jun 26, 2026

CVE-2026-24349 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All versions), SIMATIC WinCC Unified PC Runtime V17 (All versions), SIMATIC WinCC Unified PC Runtime V18 (All versions), SIMATIC WinCC Unified PC Runtime V19 (All versions), SIMATIC WinCC Unified PC Runtime V20 (All versions), SIMATIC WinCC Unified PC Runtime V21 (All versions < V21 Update 2). Insufficient protection of key material in WinCC Certificate Manager that could allow an attacker to extract sensitive information.. EPSS estimates a 0.06% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All versions), SIMATIC WinCC Unified PC Runtime V17 (All versions), SIMATIC WinCC Unified PC Runtime V18 (All versions), SIMATIC WinCC Unified PC Runtime V19 (All versions), SIMATIC WinCC Unified PC Runtime V20 (All versions), SIMATIC WinCC Unified PC Runtime V21 (All versions < V21 Update 2). Insufficient protection of key material in WinCC Certificate Manager that could allow an attacker to extract sensitive information.

Metrics

CVSS 3.1

7.1/10

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

CVSS 4.0

8.2/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/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

EPSS Probability

0.06%

0.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-313

Affected Software

Vendor	Product	Versions
Siemens	Simatic Wincc Unified Pc Runtime	>= 16, <= 20
Siemens	Simatic Wincc Unified Pc Runtime	21

References

https://cert-portal.siemens.com/productcert/html/ssa-063511.htmlMitigation, Vendor Advisory

Timeline

Published: Jun 9, 2026
Last Modified: Jun 26, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-24349?

How severe is CVE-2026-24349?

CVE-2026-24349 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.06% probability of exploitation in the next 30 days.

How do I fix CVE-2026-24349?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-24349?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST