CVE-2026-50093

criticalpriority · track · 36EPSS 0.003 · 25 %ileDENLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.32% (25th) EPSS

CVSS 9 · critical

Is it mine?

62 products

Check your exposure

Who says so?

4 sources

fstec_bdu · cisa_csaf_ot · ncsc_nl · siemens_psirt

EPSS · scored 2026-10-27

A vulnerability has been identified in Siveillance Control Pro V3.0 (All versions < V3.0.12.2173), Siveillance Control Pro V4.0 (All versions < V4.0.9.2178), Siveillance Control V3.0 (All versions < V3.0.22.2177), Siveillance Control V4.0 (All versions < V4.0.11.2177). A vulnerability in the OIS web module allows an attacker to upload arbitrary files to the server. Successful exploitation of this vulnerability could allow an attacker to gain root access on the host system, potentially leading to a full compromise of the affected OIS environment.

remediations

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

A vendor fix is available.

FixedSiveillance Control Pro V3.0siemens_psirt
Update to V3.0.12.2173 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004860/
FixedSiveillance Control Pro V4.0siemens_psirt
Update to V4.0.9.2178 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004860/
FixedSiveillance Control V3.0siemens_psirt
Update to V3.0.22.2177 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004859/
FixedSiveillance Control V4.0siemens_psirt
Update to V4.0.11.2177 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004859/
FixedSiveillance Control Pro V3.0cisa_csaf_ot
Update to V3.0.12.2173 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004860/
FixedSiveillance Control Pro V4.0cisa_csaf_ot
Update to V4.0.9.2178 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004860/
FixedSiveillance Control V3.0cisa_csaf_ot
Update to V3.0.22.2177 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004859/
FixedSiveillance Control V4.0cisa_csaf_ot
Update to V4.0.11.2177 or later version
https://support.industry.siemens.com/cs/ww/en/view/110004859/

cvss

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

9.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5.9–9

v3.19criticalCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hprimary · productcert@siemens.com DEexploitability 2.3 · impact 6

v3.19criticalAV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19criticalCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · CISA US

v3.19criticalCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · Siemens ProductCERT DE

v3.19criticalCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · NCSC-NL NL

v4.08.9highCVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

v4.05.9mediumCVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-434USCWE-434USCWE-434USCWE-434USCWE-434US

affected products (62)

Products and version ranges known to be affected.

Siveillance Control Pro V3.0 < V3.0.12.2173all versionscisa_csaf_otUS
Siveillance Control Pro V4.0 < V4.0.9.2178all versionscisa_csaf_otUS
Siveillance Control V3.0 < V3.0.22.2177all versionscisa_csaf_otUS
Siveillance Control V4.0 < V4.0.11.2177all versionscisa_csaf_otUS
Siemens Siveillance Control Pro V3.0≤ vers:intdot/<3.0.12.2173cisa_csaf_otUS
Siemens Siveillance Control Pro V4.0≤ vers:intdot/<4.0.9.2178cisa_csaf_otUS
Siemens Siveillance Control V3.0≤ vers:intdot/<3.0.22.2177cisa_csaf_otUS
Siemens Siveillance Control V4.0≤ vers:intdot/<4.0.11.2177cisa_csaf_otUS
Siemens AG Siveillance Control≤ 4.0.11.2177fstec_bduRU
Siemens AG Siveillance Control≤ 3.0.22.2177fstec_bduRU
Siemens AG Siveillance Control Pro≤ 3.0.12.2173fstec_bduRU
Siemens AG Siveillance Control Pro≤ 4.0.9.2178fstec_bduRU
Siemens CPCI85 Central Processing/Communication≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC ClickOnce Client V6≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC ClickOnce Client V7≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC Flex Client V6≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC Flex Client V7≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC Installed Client V6≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC Installed Client V7≤ vers:unknown/*ncsc_nlNL
Siemens Desigo CC family V5.0≤ vers:unknown/*ncsc_nlNL

showing 20 of 62

advisories (3)

Vendor and ecosystem advisories describing this.

NCSC-2026-0346Kwetsbaarheden verholpen in Siemens productenNL2026-09-08csaf · ncsc_nlNL
Siemens heeft kwetsbaarheden verholpen in diverse producten als Desigo, Reyrolle, SIMATIC, SCALANCE, SINAMICS en Siveillance.
SSA-254516SSA-254516: Arbitrary File Upload in OIS Web Module2026-09-08csaf · siemens_psirtDE
A vulnerability has been identified in the Open Interface Services (OIS) web module affecting Siveillance Control and Siveillance Control Pro (versions OIS 3.x.y and OIS 4.x.y) . This vulnerability allows an attacker to upload arbitrary files, which can lead to unauthorized root-level access on the OIS server. Siemens has released patches and updates for Siveillance OIS to apply to the products that incorporate the OIS service, and recommends to update to the latest versions.
ICSA-26-265-03Siemens Siveillance Control2026-09-08icsa · cisa_csaf_otUS
A vulnerability has been identified in the Open Interface Services (OIS) web module affecting Siveillance Control and Siveillance Control Pro (versions OIS 3.x.y and OIS 4.x.y) . This vulnerability allows an attacker to upload arbitrary files, which can lead to unauthorized root-level access on the OIS server. Siemens has released patches and updates for Siveillance OIS to apply to the products that incorporate the OIS service, and recommends to update to the latest versions.

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

fstec_bdu cisa_csaf_ot ncsc_nl siemens_psirt NVD CVE.org MITRE

published 2026-09-08modified 2026-09-30

references (1) nvd

External citations — patches, advisories, analysis.

https://cert-portal.siemens.com/productcert/html/ssa-254516.html

scry

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

Free scan