LiveActive security incident?Get immediate response
CVE Record

CVE-2020-5645: Session fixation vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series...

Session fixation vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series (GT1455-QTBDE CoreOS version "05.65.00.BD" and earlier, GT1450-QMBDE CoreOS version "05.65.00.BD" and earlier, GT1450-QLBDE CoreOS version "05.65.00.BD" and earlier, GT1455HS-QTBDE CoreOS version "05.65.00.BD" and earlier, and GT1450HS-QMBDE CoreOS version "05.65.00.BD" and earlier) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Certain Mitsubishi Electric GT14 GOT 1000 operator panels can have their network functions stopped by an unauthenticated remote attacker. For industrial environments, the main risk is loss of HMI network connectivity, which can disrupt monitoring or operations. The provided sources do not show active exploitation or a CVSS score.

Executive priority

Treat this as an OT availability risk. Prioritize sites where affected HMIs support production, safety monitoring, or remote operations, especially if reachable beyond a tightly controlled control network.

Technical view

CVE-2020-5645 is a session fixation vulnerability in the TCP/IP function of specified GT14 GOT 1000 firmware. Affected CoreOS versions are 05.65.00.BD and earlier for the listed GT1455, GT1450, and handheld variants. The reported impact is remote unauthenticated denial of network functions using a crafted packet.

Likely exposure

Exposure is limited to organizations using the listed Mitsubishi Electric GT14 GOT 1000 models with affected CoreOS versions and reachable TCP/IP services. Internet exposure is not stated in the sources; assess OT network reachability directly.

Exploitation context

The source bundle states remote unauthenticated attack capability, but provides no public exploit status. CISA KEV is false, and no cited source in the bundle supports active exploitation.

Researcher notes

Evidence is sufficient for affected model and version scoping, attack preconditions, and impact class. The bundle lacks CVSS, CWE, detailed protocol context, fixed-version text, and exploitation evidence, so avoid stronger claims without checking the vendor advisory.

Mitigation direction

  • Check Mitsubishi Electric PSIRT 2020-014 for official remediation guidance.
  • Update affected GT14 CoreOS firmware if vendor guidance provides a fixed version.
  • Restrict network access to GOT devices to trusted OT hosts only.
  • Place HMI networks behind firewalls and isolate them from corporate networks.
  • Monitor affected devices for unexpected loss of network functions.

Validation and detection

  • Inventory GT14 GOT 1000 models in the environment.
  • Confirm each device model against the affected product list.
  • Check CoreOS version and flag 05.65.00.BD or earlier.
  • Review firewall rules for remote reachability to GOT TCP/IP services.
  • Document any compensating segmentation or vendor remediation applied.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2020-5645 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Mitsubishi Electric CorporationGT14 Model of GOT 1000 series(GT1455-QTBDE CoreOS version ’05.65.00.BD’ and earlier, GT1450-QMBDE CoreOS version ’05.65.00.BD’ and earlier, GT1450-QLBDE CoreOS version ’05.65.00.BD’ and earlier, GT1455HS-QTBDE CoreOS version ’05.65.00.BD’ and earlier, and GT1450HS-QMBDE CoreOS version ’05.65.00.BD’ and earlier)Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.