CVE-2026-22910VulnerabilityPublished 15 Jan 2026

CVE-2026-22910: SICK TDC-X401GL · Use of Weak Credentials

Affects SICK TDC-X401GLSource CVE Database V5

Not known to be exploited · CVSS 7.5 High.

Data as of 25 Oct 2026, 18:53 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Jan 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
SICK AGTDC-X401GL	Affected =all versions	Fixed in–

AI-suggested

1. Immediately change all default and weak passwords on the TDC-X401GL devices to strong, unique credentials following best practices for password complexity and management. 2. Implement network segmentation to isolate these devices from general IT networks and limit access only to authorized personnel and systems. 3. Employ strict access control lists (ACLs) and firewall rules to restrict remote access to the devices, allowing connections only from trusted IP addresses or VPNs. 4. Continuously monitor network traffic and device logs for unusual access patterns or repeated failed login attempts that could indicate exploitation attempts. 5. Engage with SICK AG for any forthcoming patches or firmware updates addressing this vulnerability and plan for timely deployment once available. 6. Conduct regular security audits and penetration tests focusing on industrial control systems to detect similar weaknesses. 7. Educate operational technology (OT) staff about the risks of default credentials and enforce policies to prevent their use. 8. Consider deploying intrusion detection/prevention systems tailored for industrial protocols to detect unauthorized access attempts. 9. Maintain an incident response plan specific to OT environments to quickly contain and remediate any compromise related to this vulnerability.

Description

The device is deployed with weak and publicly known default passwords for certain hidden user levels, increasing the risk of unauthorized access. This represents a high risk to the integrity of the system.

Impact

For European organizations, the impact of CVE-2026-22910 is significant due to the critical role of SICK AG devices in industrial automation, manufacturing, and safety systems. Unauthorized access to these devices can lead to exposure of sensitive operational data, potentially allowing industrial espionage or competitive intelligence gathering. Although the vulnerability does not directly affect system integrity or availability, unauthorized access could enable attackers to alter configurations or prepare for further attacks that might disrupt operations. The confidentiality breach could also violate data protection regulations such as GDPR if personal or sensitive data is involved. The widespread use of SICK AG products in European industrial sectors, especially in Germany, France, Italy, and the Benelux region, increases the likelihood of targeted exploitation. The vulnerability could also undermine trust in industrial control systems and lead to costly incident response and remediation efforts. Additionally, the potential for lateral movement within segmented networks could expand the attack impact beyond the initially compromised device.

CWE-1391Use of Weak Credentials (opens in a new tab)
Class weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.
Architecture and Design · Operation
When the user changes or sets a password, check the password against a database of already compromised or breached passwords. These passwords are likely to be used in password guessing attacks.
OWASP Cheat Sheets
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V2.8.5 (opens in a new tab)
V2.8.4 (opens in a new tab)
V9.2.3 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 15 Jan 2026, 13:32 UTC

WeaknessesCWE-1391

Technical details

References

Community reviews

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