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Vulnerability Assessment

Weakness
CWE
CWE-798
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Credential externalization
MITRE ATT&CK

2 techniques across 2 tactics: Persistence, Credential Access

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

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Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived

A remote attacker could gain access using credentials embedded in source code 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.
No patch listed yet 2.8% exploitation probability (EPSS)

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AnalysisAI

The Web-GUI on WAGO Series 750-88x (750-330, 750-352, 750-829, 750-831, 750-852, 750-880, 750-881, 750-882, 750-884, 750-885, 750-889) and Series 750-87x (750-830, 750-849, 750-871, 750-872, 750-873). Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Remove hard-coded credentials, use environment variables or secrets management, rotate exposed credentials immediately.

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Technical ContextAI · show details

This vulnerability is classified as Use of Hard-coded Credentials (CWE-798), which allows attackers to gain access using credentials embedded in source code. The Web-GUI on WAGO Series 750-88x (750-330, 750-352, 750-829, 750-831, 750-852, 750-880, 750-881, 750-882, 750-884, 750-885, 750-889) and Series 750-87x (750-830, 750-849, 750-871, 750-872, 750-873) devices has undocumented service access. Affected products include: Wago 750-830 Firmware, Wago 750-849 Firmware, Wago 750-871 Firmware, Wago 750-872 Firmware, Wago 750-873 Firmware.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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
High

DescriptionNVD

The Web-GUI on WAGO Series 750-88x (750-330, 750-352, 750-829, 750-831, 750-852, 750-880, 750-881, 750-882, 750-884, 750-885, 750-889) and Series 750-87x (750-830, 750-849, 750-871, 750-872, 750-873) devices has undocumented service access.

Threat Intelligence Overview

EPSS Score
2.8%
Top 15% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

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 No
EPSS 2.8%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
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
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

52
Low Medium High Critical
KEV: 0
EPSS: +3
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

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

Affected Products (CPE)NVD

cpe:2.3:o:wago:750-830_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-849_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-871_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-872_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-873_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-330_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-352_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-829_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-831_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-852_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-880_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-881_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-882_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-884_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-885_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-889_firmware:*:*:*:*:*:*:*:*

More in 750 849 Firmware

View all
CVE-2015-6473 CRITICAL POC
9.8 Aug 22

WAGO IO 750-849 01.01.27 and WAGO IO 750-881 01.02.05 do not contain privilege separation. Rated critical severity (CVSS
CVE-2015-6472 CRITICAL POC
9.8 Aug 22

WAGO IO 750-849 01.01.27 and 01.02.05, WAGO IO 750-881, and WAGO IO 758-870 have weak credential management. Rated criti

Same weakness CWE-798 – Use of Hard-coded Credentials

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CVE-2016-1560 CRITICAL POC
9.8
CVE-2017-14143 CRITICAL POC
9.8
CVE-2025-14611 HIGH POC
7.1
CVE-2026-22769 CRITICAL
10.0
CVE-2016-5678 CRITICAL POC
9.8
CVE-2017-6558 CRITICAL POC
9.8
CVE-2015-7246 CRITICAL POC
9.8
CVE-2015-4667 CRITICAL POC
9.8

Same technique Authentication Bypass

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CVE-2015-3306 CRITICAL POC
10.0
CVE-2023-22515 CRITICAL POC
9.8
CVE-2012-4681 CRITICAL POC
9.8
CVE-2013-2465 CRITICAL POC
9.8
CVE-2011-3544 CRITICAL POC
9.8
CVE-2022-40684 CRITICAL POC
9.8
CVE-2025-61882 CRITICAL POC
9.8
CVE-2024-0012 CRITICAL POC
9.3

References

Advisories & patches
REF http://www.securityfocus.com/bid/108482 REF https://cert.vde.com/de-de/advisories/vde-2019-008 REF https://lists.apache.org/thread.html/r0066c1e862613de402fee04e81cbe00bcd64b64a2711beb9a13c3b25%40%3Ccommits.cassandra.apache.org%3E REF https://lists.apache.org/thread.html/r25e25973e9577c62fd0221b4b52990851adf11cbe33036bd67d4b13d%40%3Ccommits.cassandra.apache.org%3E REF https://lists.apache.org/thread.html/r37eb6579fa0bf94a72b6c978e2fee96f68a2b1b3ac1b1ce60aee86cf%40%3Ccommits.cassandra.apache.org%3E REF https://lists.apache.org/thread.html/r386966780034aadee69ffd82d44555117c9339545b9ce990fe490a3e%40%3Ccommits.cassandra.apache.org%3E REF https://lists.apache.org/thread.html/r80e8882c86c9c17a57396a5ef7c4f08878d629a0291243411be0de3a%40%3Ccommits.cassandra.apache.org%3E REF https://lists.apache.org/thread.html/ra37700b842790883b9082e6b281fb7596f571b13078a4856cd38f2c2%40%3Ccommits.cassandra.apache.org%3E REF https://lists.apache.org/thread.html/rb47911c179c9f3e8ea3f134b5645e63cd20c6fc63bd0b43ab5864bd1%40%3Ccommits.cassandra.apache.org%3E

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