CVE-2023-6448 (GCVE-0-2023-6448)
Vulnerability from cvelistv5 – Published: 2023-12-05 17:43 – Updated: 2025-10-21 23:05Title
Unitronics VisiLogic uses a default administrative password
Summary
Unitronics VisiLogic before version 9.9.00, used in Vision and Samba PLCs and HMIs, uses a default administrative password. An unauthenticated attacker with network access can take administrative control of a vulnerable system.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2023-12-06 14:07 UTC
CWE
- CWE-1188 - Insecure Default Initialization of Resource
References
5 references
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/alerts/2023/11/2… | government-resource |
| https://www.unitronicsplc.com/cyber_security_visi… | |
| https://downloads.unitronicsplc.com/Sites/plc/Vis… | release-notes |
| https://downloads.unitronicsplc.com/Sites/plc/Tec… | vendor-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Unitronics | VisiLogic |
Affected:
0 , < 9.9.00
(custom)
|
guessed | |
| unitronics | visilogic |
Affected:
0 , < 9.9.00
(custom)
cpe:2.3:a:unitronics:visilogic:*:*:*:*:*:*:*:* |
Date Public
2023-11-28 05:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b5bafd3f-826d-4425-89ea-4cac02ebddca
Exploited: Yes
Timestamps
First Seen: 2023-12-11
Asserted: 2023-12-11
Scope
Notes: KEV entry: Unitronics Vision PLC and HMI Insecure Default Password Vulnerability | Affected: Unitronics / Vision PLC and HMI | Description: Unitronics Vision Series PLCs and HMIs ship with an insecure default password, which if left unchanged, can allow attackers to execute remote commands. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2023-12-18 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): Note that while it is possible to change the default password, implementors are encouraged to remove affected controllers from public networks and update the affected firmware: https://downloads.unitronicsplc.com/Sites/plc/Technical_Library/Unitronics-Cybersecurity-Advisory-2023-001-CVE-2023-6448.pdf; https://nvd.nist.gov/vuln/detail/CVE-2023-6448
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-1188 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Vision PLC and HMI |
| Due Date | 2023-12-18 |
| Date Added | 2023-12-11 |
| Vendorproject | Unitronics |
| Vulnerabilityname | Unitronics Vision PLC and HMI Insecure Default Password Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:26 UTC
| Updated: 2026-02-06 07:17 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d8614e9b-e0cb-4603-96db-77381509510e
Exploited: Yes
Timestamps
First Seen: 2023-12-11
Asserted: 2023-12-11
Scope
Notes: KEVIntel entry: Unitronics VisiLogic uses a default administrative password | Affected: Unitronics / VisiLogic | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | Unitronics VisiLogic uses a default administrative password |
| Vendor | Unitronics |
| Product | VisiLogic |
| Added Date | 2023-12-11T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 14:05 UTC
| Updated: 2026-07-10 06:14 UTC
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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