OT software used in manufacturing; exposure of key material could enable certificate theft and credential compromise.
CVE-2026-24349
Key material exposed in WinCC Certificate Manager allowing sensitive data extraction.
Is CVE-2026-24349 being exploited?
Not confirmed. CVE-2026-24349 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.06% probability of exploitation in the next 30 days.
How severe is CVE-2026-24349?
CVE-2026-24349 is rated High with a CVSS score of 8.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-24349?
Yes. A fix has been recorded for CVE-2026-24349. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-24349 affect?
CVE-2026-24349 affects SIMATIC WinCC Unified PC Runtime V16, SIMATIC WinCC Unified PC Runtime V17, SIMATIC WinCC Unified PC Runtime V18, SIMATIC WinCC Unified PC Runtime V19, and 3 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-24349?
Apply patch; rotate keys; verify certificates.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Exfiltration of private keys/certificates enables impersonation and TLS/PKI abuse.
Patch when possible
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- affected< V21 Update 2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.