SICK DL100-2xxxxxxx: Use of Weak Hash
CVE-2025-27595 is a critical-severity use of weak hash vulnerability in SICK DL100-2xxxxxxx from SICK, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected SICK DL100-2xxxxxxx versions: all versions. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.54% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Check which version of SICK DL100-2xxxxxxx you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on sick.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| SICK | SICK DL100-2xxxxxxx | all versions | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (sick.de).
Official description
The device uses a weak hashing alghorithm to create the password hash. Hence, a matching password can be easily calculated by an attacker. This impacts the security and the integrity of the device.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Use of Weak Hash
The product uses an algorithm that produces a digest (output value) that does not meet security expectations for a hash function that allows an adversary to reasonably determine the original input (preimage attack), find another input that can produce the same hash (2nd preimage attack), or find multiple inputs that evaluate to the same hash (birthday attack).
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other references
- cdn.sick.com/media/docs/1/11/411/Special_information_CYBERSECURITY_BY_SICK_en_IM0084411.PDF
- github.security.telekom.com/2025/03/multiple-vulnerabilities-in-sick-dl100.html
- cisa.gov/resources-tools/resources/ics-recommended-practices
- first.org/cvss/calculator/3.1
- sick.com/.well-known/csaf/white/2025/sca-2025-0004.json
- sick.com/.well-known/csaf/white/2025/sca-2025-0004.pdf
Other vulnerabilities in SICK DL100-2xxxxxxx
- 7.5 High severity
- 9.3 Critical severity
Recent Use of Weak Hash vulnerabilities
- 9.3 Critical severity
- 8.7 High severity
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