CVE-2021-20599 (GCVE-0-2021-20599)
Vulnerability from cvelistv5 – Published: 2021-10-14 00:00 – Updated: 2024-08-03 17:45
VLAI
EPSS
VEX
Summary
Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions "26" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-22 20:51 UTC
CWE
- CWE-319 - Cleartext Transmission of Sensitive Information
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.mitsubishielectric.com/en/psirt/vulne… | vendor-advisory |
| https://jvn.jp/vu/JVNVU98578731 | government-resource |
| https://www.cisa.gov/uscert/ics/advisories/icsa-2… | government-resource |
Impacted products
16 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Mitsubishi Electric Corporation | MELSEC iQ-R Series Safety CPU R08SFCPU |
Affected:
Firmware versions "26" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R series Safety CPU R16SFCPU |
Affected:
Firmware versions "26" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R series Safety CPU R32SFCPU |
Affected:
Firmware versions "26" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R series Safety CPU R120SFCPU |
Affected:
Firmware versions "26" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU |
Affected:
Firmware versions "11" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R series SIL2 Process CPU R16PSFCPU |
Affected:
Firmware versions "11" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R series SIL2 Process CPU R32PSFCPU |
Affected:
Firmware versions "11" and prior
|
guessed | |
| Mitsubishi Electric Corporation | MELSEC iQ-R series SIL2 Process CPU R120PSFCPU |
Affected:
Firmware versions "11" and prior
|
guessed | |
| mitsubishielectric | melsec_iq-r08sfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:melsec_iq-r08sfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r16sfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r16sfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r32sfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r32sfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r120sfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r120sfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r08psfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r08psfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r16psfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r16psfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r32psfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r32psfcpu:-:*:*:*:*:*:*:* |
||
| mitsubishielectric | r120psfcpu |
Affected:
-
cpe:2.3:h:mitsubishielectric:r120psfcpu:-:*:*:*:*:*:*:* |
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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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