CVE-2020-5544

CVSS V2 High 7.5 CVSS V3 Critical 9.8
Description
Null Pointer Dereference vulnerability in TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier allows remote attackers to stop the network functions or execute malware via a specially crafted packet.
Overview
  • CVE ID
  • CVE-2020-5544
  • Assigner
  • vultures@jpcert.or.jp
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-03-16T02:15:10
  • Last Modified Date
  • 2020-03-19T16:31:03
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:mitsubishielectric:iu1-1m20-d_firmware:*:*:*:*:*:*:*:* 1 OR 1.0.7
cpe:2.3:h:mitsubishielectric:iu1-1m20-d:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2019-004.pdf Patch Vendor Advisory
https://jvn.jp/en/vu/JVNVU92370624/index.html Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-5544
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5544
History
Created Old Value New Value Data Type Notes
2022-05-10 16:46:55 Added to TrackCVE
2022-12-04 12:53:17 2020-03-16T02:15Z 2020-03-16T02:15:10 CVE Published Date updated
2022-12-04 12:53:17 2020-03-19T16:31:03 CVE Modified Date updated
2022-12-04 12:53:17 Analyzed Vulnerability Status updated