High severity · published Jun 28, 2021
CVE-2021-20740
Hitachi Virtual File Platform Versions prior to 5.5.3-09 and Versions prior to 6.4.3-09, and NEC Storage M Series NAS Gateway Nh4a/Nh8a versions prior to FOS 5.5.3-08(NEC2.5.4a)…
8.8
CVSS
3.1%
EPSS
No
On KEV
Description
Hitachi Virtual File Platform Versions prior to 5.5.3-09 and Versions prior to 6.4.3-09, and NEC Storage M Series NAS Gateway Nh4a/Nh8a versions prior to FOS 5.5.3-08(NEC2.5.4a) and Nh4b/Nh8b, Nh4c/Nh8c versions prior to FOS 6.4.3-08(NEC3.4.2) allow remote authenticated attackers to execute arbitrary OS commands with root privileges via unspecified vectors.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NG
Nas Gateway Nh4a Firmware · Nec
before fos_5.5.3-08\(nec2.5.4a\) · source: NVD
NG
Nas Gateway Nh4b Firmware · Nec
before fos_6.4.3-08\(nec3.4.2\) · source: NVD
NG
Nas Gateway Nh4c Firmware · Nec
before fos_6.4.3-08\(nec3.4.2\) · source: NVD
NG
Nas Gateway Nh8a Firmware · Nec
before fos_5.5.3-08\(nec2.5.4a\) · source: NVD
NG
Nas Gateway Nh8b Firmware · Nec
before fos_6.4.3-08\(nec3.4.2\) · source: NVD
NG
Nas Gateway Nh8c Firmware · Nec
before fos_6.4.3-08\(nec3.4.2\) · source: NVD
VF
Virtual File Platform · Hitachi
before 6.4.3-09; before 5.5.3-09 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20740
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20740
Vendor Advisory
https://jpn.nec.com/security-info/secinfo/nv21-011.html
Third Party Advisory
https://jvn.jp/en/jp/JVN21298724/index.html
Vendor Advisory
https://www.hitachi.co.jp/products/it/storage-solutions/global/sec_info/2021/2021_306.html