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CVE-2021-20599 (GCVE-0-2021-20599)

Vulnerability from cvelistv5 – Published: 2021-10-14 00:00 – Updated: 2024-08-03 17:45
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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
Impacted products
Vendor Product Version CPE status
Mitsubishi Electric Corporation MELSEC iQ-R Series Safety CPU R08SFCPU Affected: Firmware versions "26" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R16SFCPU Affected: Firmware versions "26" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R32SFCPU Affected: Firmware versions "26" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R series Safety CPU R120SFCPU Affected: Firmware versions "26" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R Series SIL2 Process CPU R08PSFCPU Affected: Firmware versions "11" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R16PSFCPU Affected: Firmware versions "11" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R32PSFCPU Affected: Firmware versions "11" and prior
guessed Create a notification for this product.
Mitsubishi Electric Corporation MELSEC iQ-R series SIL2 Process CPU R120PSFCPU Affected: Firmware versions "11" and prior
guessed Create a notification for this product.
mitsubishielectric melsec_iq-r08sfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:melsec_iq-r08sfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r16sfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r16sfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r32sfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r32sfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r120sfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r120sfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r08psfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r08psfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r16psfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r16psfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r32psfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r32psfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
mitsubishielectric r120psfcpu Affected: -
    cpe:2.3:h:mitsubishielectric:r120psfcpu:-:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
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      "cve": "CVE-2021-20599",
      "id": "CVE-2021-20599",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
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}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.