High severity · published Aug 5, 2021
CVE-2021-20592
Missing synchronization vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.39.010, GT25 model communication driver versions 01.19.000…
7.5
CVSS
1.5%
EPSS
No
On KEV
Description
Missing synchronization vulnerability in GOT2000 series GT27 model communication driver versions 01.19.000 through 01.39.010, GT25 model communication driver versions 01.19.000 through 01.39.010 and GT23 model communication driver versions 01.19.000 through 01.39.010 and GT SoftGOT2000 versions 1.170C through 1.256S allows a remote unauthenticated attacker to cause DoS condition on the MODBUS/TCP slave communication function of the products by rapidly and repeatedly connecting and disconnecting to and from the MODBUS/TCP communication port on a target. Restart or reset is required to recover.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GS
GT Softgot2000 · Mitsubishielectric
1.170c through 1.256s · source: NVD
GG
Got2000 Gt23 Firmware · Mitsubishielectric
01.19.000 through 01.39.010 · source: NVD
GG
Got2000 Gt25 Firmware · Mitsubishielectric
01.19.000 through 01.39.010 · source: NVD
GG
Got2000 Gt27 Firmware · Mitsubishielectric
01.19.000 through 01.39.010 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20592
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20592
jvn.jp
https://jvn.jp/vu/JVNVU92414172/index.html
www.mitsubishielectric.com
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2021-007_en.pdf
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