Siemens SIMATIC S7-300 CPU/SINUMERIK 840D sl on port Service Port 102 resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Siemens SIMATIC S7-300 CPU and SINUMERIK 840D sl on port. Affected by this vulnerability is an unknown functionality of the component Service Port 102. Executing a manipulation can lead to resource consumption. This vulnerability is registered as CVE-2020-15783. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Siemens SIMATIC S7-300 CPU and SINUMERIK 840D sl on port (SCADA Software) (unknown version). This vulnerability affects an unknown code block of the component Service Port 102. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC TDC CPU555 (All versions), SINUMERIK 840D sl (All versions). Sending multiple specially crafted packets to the affected devices could cause a Denial-of-Service on port 102. A cold restart is required to recover the service.

The weakness was published 11/13/2020 as ssa-492828. The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2020-15783. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/03/2026). This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/15/2020 🔍
11/13/2020 +121 days 🔍
11/13/2020 +0 days 🔍
06/03/2026 +2028 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-492828
Status: Confirmed

CVE: CVE-2020-15783 (🔍)
GCVE (CVE): GCVE-0-2020-15783
GCVE (VulDB): GCVE-100-164890

Entryinfo

Created: 11/13/2020 07:31
Updated: 06/03/2026 02:43
Changes: 11/13/2020 07:31 (38), 12/06/2020 21:48 (2), 12/06/2020 21:50 (18), 06/03/2026 02:43 (27)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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