Siemens LOGO! 12 missing authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.4$5k-$25k0.00

Summaryinfo

A vulnerability was found in Siemens LOGO! 12, 24RCE, 24RCEo, LOGO! 230RCE, LOGO! 230RCEo, LOGO! 24CE, LOGO! 24CEo, LOGO! 24RCE, LOGO! 24RCEo, SIPLUS LOGO! 12, SIPLUS LOGO! 230RCE, SIPLUS LOGO! 230RCEo, SIPLUS LOGO! 24CE, SIPLUS LOGO! 24CEo, SIPLUS LOGO! 24RCE and SIPLUS LOGO! 24RCEo. It has been classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to missing authentication. This vulnerability is uniquely identified as CVE-2025-40817. The attack can only be initiated within the local network. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Siemens LOGO! 12, 24RCE, 24RCEo, LOGO! 230RCE, LOGO! 230RCEo, LOGO! 24CE, LOGO! 24CEo, LOGO! 24RCE, LOGO! 24RCEo, SIPLUS LOGO! 12, SIPLUS LOGO! 230RCE, SIPLUS LOGO! 230RCEo, SIPLUS LOGO! 24CE, SIPLUS LOGO! 24CEo, SIPLUS LOGO! 24RCE and SIPLUS LOGO! 24RCEo. This issue affects an unknown code block. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is integrity. The summary by CVE is:

A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA2) (All versions), LOGO! 12/24RCEo (6ED1052-2MD08-0BA2) (All versions), LOGO! 230RCE (6ED1052-1FB08-0BA2) (All versions), LOGO! 230RCEo (6ED1052-2FB08-0BA2) (All versions), LOGO! 24CE (6ED1052-1CC08-0BA2) (All versions), LOGO! 24CEo (6ED1052-2CC08-0BA2) (All versions), LOGO! 24RCE (6ED1052-1HB08-0BA2) (All versions), LOGO! 24RCEo (6ED1052-2HB08-0BA2) (All versions), SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA2) (All versions), SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA2) (All versions), SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA2) (All versions), SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA2) (All versions), SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA2) (All versions), SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA2) (All versions), SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA2) (All versions), SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA2) (All versions). Affected devices do not conduct certain validations when interacting with them. This could allow an unauthenticated remote attacker to change time of the device, which means the device could behave differently.

The advisory is shared at cert-portal.siemens.com. The identification of this vulnerability is CVE-2025-40817 since 04/16/2025. The exploitation is known to be easy. Access to the local network is required for this attack. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/12/2025).

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

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202511-991). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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License

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

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

CNA Base Score: 6.5
CNA Vector (siemens): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

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

04/16/2025 CVE reserved
11/12/2025 +210 days Advisory disclosed
11/12/2025 +0 days VulDB entry created
11/12/2025 +0 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-267056
Status: Confirmed

CVE: CVE-2025-40817 (🔒)
GCVE (CVE): GCVE-0-2025-40817
GCVE (VulDB): GCVE-100-332057
CNNVD: CNNVD-202511-991 - Siemens LOGO! 访问控制错误漏洞

Entryinfo

Created: 11/12/2025 07:24
Updated: 11/12/2025 16:23
Changes: 11/12/2025 07:24 (73), 11/12/2025 16:23 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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