6.9
MEDIUM CVSS 4.0
CVE-2023-50821
"SIMATIC authentication bypass and DoS vulnerability"
Description

A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions < V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.

INFO

Published Date :

April 9, 2024, 9:15 a.m.

Last Modified :

Jan. 14, 2025, 11:15 a.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2023-50821 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Siemens simatic_wincc
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
CVSS 4.0 MEDIUM [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-50821.

URL Resource
https://cert-portal.siemens.com/productcert/html/ssa-730482.html
https://cert-portal.siemens.com/productcert/html/ssa-730482.html
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-50821 is associated with the following CWEs:

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-50821 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-50821 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    Jan. 14, 2025

    Action Type Old Value New Value
    Changed Description A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition. A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions < V17 Update 8), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/html/ssa-730482.html
  • CVE Modified by [email protected]

    Jul. 09, 2024

    Action Type Old Value New Value
    Changed Description A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions), SIMATIC WinCC Runtime Professional V18 (All versions), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition. A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions), SIMATIC WinCC Runtime Professional V18 (All versions < V18 Update 4), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions < V8.0 Update 5). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.
    Added CVSS V4.0 Siemens AG CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/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:X
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by [email protected]

    Apr. 09, 2024

    Action Type Old Value New Value
    Added Description A vulnerability has been identified in SIMATIC PCS 7 V9.1 (All versions < V9.1 SP2 UC04), SIMATIC WinCC Runtime Professional V17 (All versions), SIMATIC WinCC Runtime Professional V18 (All versions), SIMATIC WinCC Runtime Professional V19 (All versions < V19 Update 1), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 16), SIMATIC WinCC V8.0 (All versions). The affected products do not properly validate the input provided in the login dialog box. An attacker could leverage this vulnerability to cause a persistent denial of service condition.
    Added Reference Siemens AG https://cert-portal.siemens.com/productcert/html/ssa-730482.html [No types assigned]
    Added CWE Siemens AG CWE-120
    Added CVSS V3.1 Siemens AG AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 6.9
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 6.2
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact