CVE-2019-10931
mediumpriority · track · 31EPSS 0.015 · 74 %ileEURUUSEPSS · scored 2026-10-28
A vulnerability has been identified in All other SIPROTEC 5 device types with CPU variants CP300 and CP100 and the respective Ethernet communication modules (All versions ), DIGSI 5 engineering software (All versions < V7.90), SIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modules (All versions < V7.90), SIPROTEC 5 device types 7SS85 and 7KE85 (All versions < V8.01), SIPROTEC 5 device types with CPU variants CP200 and the respective Ethernet communication modules (All versions < V7.59), SIPROTEC 5 relays with CPU variants CP200 and the respective Ethernet communication modules (All versions < V7.59). Specially crafted packets sent to port 443/TCP could cause a Denial of Service condition.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedDIGSI 5 engineering softwarecisa_csaf_ot
Update to V7.90 or later version and activate the client authorization feature https://support.industry.siemens.com/cs/us/en/view/109767686
- FixedSIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modulescisa_csaf_ot
Update to V7.90 or later version. Search for "SIPROTEC 5 - DIGSI Device Drivers" on the Siemens Industry Online Support site. The latest firmware version for the communication modules can also be found on each device specific download page. Applying the update causes the device / module to go through a single restart cycle. https://support.industry.siemens.com/cs/ww/en/
- FixedSIPROTEC 5 device types 7SS85 and 7KE85cisa_csaf_ot
Update to V8.01 or later version. Search for "SIPROTEC 5 - DIGSI Device Drivers" on the Siemens Industry Online Support site. Applying the update causes the device / module to go through a single restart cycle. https://support.industry.siemens.com/cs/ww/en/
- FixedSIPROTEC 5 device types with CPU variants CP200 and the respective Ethernet communication modulescisa_csaf_ot
Update to V7.59 or later version. Search for "SIPROTEC 5 - DIGSI Device Drivers" on the Siemens Industry Online Support site. The latest firmware version for the communication modules can also be found on each device specific download page. Applying the update causes the device / module to go through a single restart cycle. https://support.industry.siemens.com/cs/ww/en/
https://support.industry.siemens.com/cs/ww/en/ - MitigationAll other SIPROTEC 5 device types with CPU variants CP300 and CP100 and the respective Ethernet communication modulescisa_csaf_ot
Activate role based access control (RBAC) in the device (supported in SIPROTEC 5 firmware versions V7.80 and higher)
- MitigationDIGSI 5 engineering softwarecisa_csaf_ot
Activate role based access control (RBAC) in the device (supported in SIPROTEC 5 firmware versions V7.80 and higher)
- MitigationSIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modulescisa_csaf_ot
Activate role based access control (RBAC) in the device (supported in SIPROTEC 5 firmware versions V7.80 and higher)
- MitigationSIPROTEC 5 device types 7SS85 and 7KE85cisa_csaf_ot
Activate role based access control (RBAC) in the device (supported in SIPROTEC 5 firmware versions V7.80 and higher)
- MitigationSIPROTEC 5 device types with CPU variants CP200 and the respective Ethernet communication modulescisa_csaf_ot
Activate role based access control (RBAC) in the device (supported in SIPROTEC 5 firmware versions V7.80 and higher)
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (45)
Products and version ranges known to be affected.
- Siemens SIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modules: <V7.90all versionscisa_csaf_otUS
- Siemens SIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modules< V7.90cisa_csaf_otUS
- Siemens AG SIPROTEC 5 device types 6MD85, 6MD86, 6MD89, 7UM85, 7SA87, 7SD87, 7SL87, 7VK87, 7SA82, 7SA86, 7SD82, 7SD86, 7SL82, 7SL86, 7SJ86, 7SK82, 7SK85, 7SJ82, 7SJ85, 7UT82, 7UT85, 7UT86, 7UT87 and 7VE85 with CPU variants CP300 and CP100 and the respective Ethernet communication modulesAll versions → V7.90enisa_euvdEU
advisories (1)
Vendor and ecosystem advisories describing this.
- ICSA-19-190-05Siemens SIPROTEC 5 and DIGSI 5 (Update C)2019-07-09icsa · cisa_csaf_otUS
Operators of critical power systems (e.g. TSOs or DSOs) worldwide are usually required by regulations to build resilience into the power grids by applying multi-level redundant secondary protection schemes. It is therefore recommended that the operators check whether appropriate resilient protection measures are in place. The risk of cyber incidents impacting the grid's reliability can thus be minimized by virtue of the grid design. Siemens strongly recommends applying the provided security updates using the corresponding tooling and documented procedures made available with the product. If supported by the product, an automated means to apply the security updates across multiple product instances may be used. Siemens strongly recommends prior validation of any security update before being applied, and supervision by trained staff of the update process in the target environment. As a general security measure Siemens strongly recommends to protect network access with appropriate mechanisms (e.g. firewalls, segmentation, VPN). It is advised to configure the environment according to our operational guidelines in order to run the devices in a protected IT environment. Recommended security guidelines to Digital Grid Products can be found at:
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://cert-portal.siemens.com/productcert/pdf/ssa-899560.pdfcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-10931cnnvd
- https://www.auscert.org.au/bulletins/ESB-2019.2525/cnnvd
- https://www.us-cert.gov/ics/advisories/icsa-19-190-05cnnvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-899560.pdfenisa_euvd
- https://cert-portal.siemens.com/productcert/pdf/ssa-899560.pdfVendor Advisorynvd
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