A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).
A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions). Unencrypted storage of passwords in the client configuration files and during network transmission could allow an attacker in a privileged position to obtain access passwords.
- Published
- Jul 3, 2018
- Updated
- Jun 16, 2026
- EPSS
- 1.0% · 62th percentile
- CWE
- CWE-311
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Report tools
Action score
26
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 1.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| siemens | siclock tc400 firmware | cpe:2.3:o:siemens:siclock_tc400_firmware |
| siemens | siclock tc400 | cpe:2.3:h:siemens:siclock_tc400 |
| siemens | siclock tc100 firmware | cpe:2.3:o:siemens:siclock_tc100_firmware |
| siemens | siclock tc100 | cpe:2.3:h:siemens:siclock_tc100 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- siemens siclock tc100 firmwareall versions
- siemens siclock tc400 firmwareall versions
Versions reported by the vendor
Affected version ranges reported by the assigning authority (siemens). Independent of NVD's CPE analysis and usually ahead of it.
Siemens AG SICLOCK TC100, SICLOCK TC400
- SICLOCK TC100 : All versions, SICLOCK TC400 : All versionsaffected
Same product
siemens: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-4853A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).40Plan
- CVE-2018-4852A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).40Plan
- CVE-2018-4854A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).36Monitor
- CVE-2018-4851A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).32Monitor
- CVE-2018-4856A vulnerability has been identified in SICLOCK TC100 (All versions) and SICLOCK TC400 (All versions).19Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-311 · Missing Encryption of Sensitive DataCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Sniffing AttacksCAPEC-157Medium
- Sniffing Network TrafficCAPEC-158Medium
- Lifting Sensitive Data Embedded in CacheCAPEC-204Medium
- Accessing/Intercepting/Modifying HTTP CookiesCAPEC-31likelihood: High · High
- Retrieve Embedded Sensitive DataCAPEC-37likelihood: High · Very High
- Harvesting Information via API Event MonitoringCAPEC-383Low
- Application API Message Manipulation via Man-in-the-MiddleCAPEC-384Low
- Transaction or Event Tampering via Application API ManipulationCAPEC-385Medium
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.