CVE-2021-20599
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 1.3%
exploitation probability
1.3%top 32% of all CVEs
observed exploitation
nono source reports it
Cleartext Transmission of Sensitive InformationCleartext transmission of sensitive information vulnerability in MELSEC iQ-R series Safety CPU R08/16/32/120SFCPU firmware versions "26" and prior and MELSEC iQ-R series SIL2 Process CPU R08/16/32/120PSFCPU firmware versions "11" and prior allows a remote unauthenticated attacker to login to a target CPU module by obtaining credentials other than password.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Mitsubishi Electric Corporation · MELSEC iQ-R Series Safety CPU R08SFCPUMitsubishi Electric Corporation · MELSEC iQ-R series Safety CPU R120SFCPUMitsubishi Electric Corporation · MELSEC iQ-R series Safety CPU R16SFCPUMitsubishi Electric Corporation · MELSEC iQ-R series Safety CPU R32SFCPUMitsubishi Electric Corporation · MELSEC iQ-R Series SIL2 Process CPU R08PSFCPUMitsubishi Electric Corporation · MELSEC iQ-R series SIL2 Process CPU R120PSFCPUMitsubishi Electric Corporation · MELSEC iQ-R series SIL2 Process CPU R16PSFCPUMitsubishi Electric Corporation · MELSEC iQ-R series SIL2 Process CPU R32PSFCPU