CVE-2021-20601

HIGH
7.5
CVSS Score
Published: November 23, 2021 at 02:42 PM UTC
Updated: June 17, 2026 at 03:34 AM UTC
104 products affected across 1 vendorGT SoftGOT2000GOT2000 Gt2103-pmbls FirmwareGOT2000 Gt2103-pmbd Firmware

Using GOT2000 series GT27 model; GOT2000 series GT25 model; GOT2000 series GT23 model; GOT2000 series GT21 model; GOT SIMPLE series GS21 model; GT SoftGOT2000 by N/A?

Get instant alerts when new vulnerabilities affect GOT2000 series GT27 model; GOT2000 series GT25 model; GOT2000 series GT23 model; GOT2000 series GT21 model; GOT SIMPLE series GS21 model; GT SoftGOT2000 - before attackers find them.

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

Description

Improper input validation vulnerability in GOT2000 series GT27 model all versions, GOT2000 series GT25 model all versions, GOT2000 series GT23 model all versions, GOT2000 series GT21 model all versions, GOT SIMPLE series GS21 model all versions, and GT SoftGOT2000 all versions allows an remote unauthenticated attacker to write a value that exceeds the configured input range limit by sending a malicious packet to rewrite the device value. As a result, the system operation may be affected, such as malfunction.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
mitsubishielectric-got-simple-gs2107-wtbd (same device)
All versions
mitsubishielectric-got-simple-gs2110-wtbd (same device)
All versions
mitsubishielectric-got2000-gt2103-pmbd (same device)
All versions
mitsubishielectric-got2000-gt2103-pmbds (same device)
All versions
mitsubishielectric-got2000-gt2103-pmbds2 (same device)
All versions
mitsubishielectric-got2000-gt2103-pmbls (same device)
All versions
mitsubishielectric-got2000-gt2104-rtbd (same device)
All versions
mitsubishielectric-got2000-gt2107-wtbd (same device)
All versions
mitsubishielectric-got2000-gt2308-vtba (same device)
All versions
mitsubishielectric-got2000-gt2308-vtbd (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_MISCThird Party Advisory
https://jvn.jp/vu/JVNVU98072504
x_refsource_MISCThird Party AdvisoryUS Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-320-02

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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