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Logo 8 Bm Firmware CVE-2019-10919

CRITICAL
Missing Authentication for Critical Function (CWE-306)
2019-05-14 productcert@siemens.com
9.4
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 9.4 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.

Exploit ScenarioDerived

A remote attacker could access critical functionality without authentication by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 2.7% exploitation probability (EPSS)

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AnalysisAI

A vulnerability has been identified in LOGO!. Rated critical severity (CVSS 9.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Require authentication for all sensitive operations, implement defense in depth.

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Missing Authentication for Critical Function (CWE-306), which allows attackers to access critical functionality without authentication. A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Attackers with access to port 10005/tcp could perform device reconfigurations and obtain project files from the devices. The system manual recommends to protect access to this port. The security vulnerability could be exploited by an unauthenticated attacker with network access to port 10005/tcp. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known. Affected products include: Siemens Logo\!8 Bm Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.4 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

DescriptionNVD

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Attackers with access to port 10005/tcp could perform device reconfigurations and obtain project files from the devices. The system manual recommends to protect access to this port. The security vulnerability could be exploited by an unauthenticated attacker with network access to port 10005/tcp. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.

Threat Intelligence Overview

EPSS Score
2.7%
Top 16% exploitable
Exploit
POC
Public exploit code exists
Data Quality
2 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC Yes
EPSS 2.7%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +3
CVSS: +47
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:o:siemens:logo\!8_bm_firmware:*:*:*:*:*:*:*:*
CVE-2020-7593 CRITICAL POC
9.8 Jul 14

A vulnerability has been identified in LOGO!. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploit

CVE-2019-10921 HIGH POC
7.5 May 14

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

CVE-2022-36361 CRITICAL
9.8 Oct 11

A vulnerability has been identified in LOGO!. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploit

CVE-2020-25228 CRITICAL
9.8 Dec 14

A vulnerability has been identified in LOGO!. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploit

CVE-2020-7589 CRITICAL
9.1 Jun 10

A vulnerability has been identified in LOGO!. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploit

CVE-2020-25234 HIGH
7.7 Dec 14

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.7), this vulnerability is no authentication re

CVE-2022-36362 HIGH
7.5 Oct 11

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

CVE-2022-36360 HIGH
7.5 Oct 11

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

CVE-2020-25235 HIGH
7.5 Dec 14

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

CVE-2020-25232 HIGH
7.5 Dec 14

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

CVE-2020-25230 HIGH
7.5 Dec 14

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

CVE-2020-25229 HIGH
7.5 Dec 14

A vulnerability has been identified in LOGO!. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable

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