CVE-2026-24349

highpriority · track · 0EPSS 0.001 · 0 %ileDEEUNLRUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.06% (0th) EPSS
CVSS 7.1 · high
Is it mine?
308 products
Check your exposure
Who says so?
7 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedSIMATIC WinCC Unified PC Runtime V21siemens_psirt

    Update to V21 Update 2 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109991140/
  • FixedSIMATIC WinCC Unified PC Runtime V21cisa_csaf_ot

    Update to V21 Update 2 or later version

    https://support.industry.siemens.com/cs/ww/en/view/109991140/
  • MitigationSIMATIC WinCC Unified PC Runtime V16siemens_psirt

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V17siemens_psirt

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V18siemens_psirt

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V19siemens_psirt

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V20siemens_psirt

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V21siemens_psirt

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V16cisa_csaf_ot

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V17cisa_csaf_ot

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V18cisa_csaf_ot

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V19cisa_csaf_ot

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V20cisa_csaf_ot

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • MitigationSIMATIC WinCC Unified PC Runtime V21cisa_csaf_ot

    The affected product may be operated only by personnel qualified for the specific task in accordance with the relevant documentation, in particular its warning notices and safety instructions. Qualified personnel are those who, based on their training and experience, are capable of identifying risks and avoiding potential hazards when working with the affected product.

  • No fix plannedSIMATIC WinCC Unified PC Runtime V16siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V17siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V18siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V19siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V20siemens_psirt

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V16cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V17cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V18cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V19cisa_csaf_ot

    Currently no fix is planned

  • No fix plannedSIMATIC WinCC Unified PC Runtime V20cisa_csaf_ot

    Currently no fix is planned

02

cvss

Technical severity, 0–10. One row per scoring source.

8.2
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.6–8.2

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · NCSC-NL NL
v3.17.1highAV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · productcert@siemens.com DEexploitability 2.5 · impact 4
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · Siemens ProductCERT DE
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:Nsecondary · CISA US
v4.08.2highCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:Nsecondary · ENISA EU
v4.08.2highCVSS: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:Xsecondary · productcert@siemens.com DE
v4.05.6mediumCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-313USCWE-313USCWE-313USCWE-313USCWE-313US
05

affected products (308)

Products and version ranges known to be affected.

showing 20 of 308
06

advisories (4)

Vendor and ecosystem advisories describing this.

  • NCSC-2026-0187Kwetsbaarheden verholpen in Siemens productenNL2026-06-09csaf · ncsc_nlNL

    Siemens heeft kwetsbaarheden verholpen in diverse producten als SCALANCE, SIMATIC, SINAMICS, SIPROTEC en TIA Portal.

  • SSA-063511SSA-063511: Insufficient protection of key material in WinCC Certificate Manager2026-06-09csaf · siemens_psirtDE

    WinCC Certificate Manager insufficiently protects key material that could allow an attacker to extract sensitive information. Siemens has released a new version for SIMATIC WinCC Unified PC Runtime V21 and recommends to update to the latest version. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

  • WID-SEC-W-2026-1826Siemens TIA Portal (WinCC Unified PC Runtime): Schwachstelle ermöglicht Offenlegung von InformationenDeutsch2026-06-08csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle in Siemens TIA Portal ausnutzen, um Informationen offenzulegen.

  • ICSA-26-174-01Siemens WinCC Certificate Manager2026-06-09icsa · cisa_csaf_otUS

    WinCC Certificate Manager insufficiently protects key material that could allow an attacker to extract sensitive information. Siemens has released a new version for SIMATIC WinCC Unified PC Runtime V21 and recommends to update to the latest version. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundcisa_csaf_otncsc_nlsiemens_psirtNVDCVE.orgMITRE
published 2026-06-09modified 2026-10-23
09

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan