Vulnerability · Published May 19, 2021 · Assigned by Mitsubishi

CVE-2021-20589

High 7.5

In plain English

A high-severity security flaw in GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).

Severity (CVSS NVD)7.5High

Exploit odds (30 days)1.5%top 26.0% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Buffer access with incorrect length value vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.38.000, GT25 model communication driver versions 01.19.000 through 01.38.000, GT23 model communication driver versions 01.19.000 through 01.38.000 and GT21 model communication driver versions 01.21.000 through 01.39.000, GOT SIMPLE series GS21 model communication driver versions 01.21.000 through 01.39.000, GT SoftGOT2000 versions 1.170C through 1.250L and Tension Controller LE7-40GU-L Screen package data for MODBUS/TCP V1.00 allows a remote unauthenticated attacker to stop the communication function of the products via specially crafted packets.

Affected products (as reported)

Vendor	Product	Versions
n/a	GOT2000 series; GOT SIMPLE series; GT SoftGOT2000; Tension Controller	GT27 model communication driver versions 01.19.000 through 01.38.000, GT25 model communication driver versions 01.19.000 through 01.38.000, GT23 model communication driver versions 01.19.000 through 01.38.000, GT21 model communication driver versions 01.21.000 through 01.39.000GS21 model communication driver versions 01.21.000 through 01.39.000GT SoftGOT2000 versions 1.170C through 1.250LLE7-40GU-L Screen package data for MODBUS/TCP V1.00

References

https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-002_en.pdf x_refsource_MISC
https://jvn.jp/vu/JVNVU99895108/index.html x_refsource_MISC