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CVE-2020-5684

MEDIUM
4.8
CVSS Score
Published: December 24, 2020 at 01:20 AM UTC
Updated: June 17, 2026 at 03:22 AM UTC
5 products affected across 1 vendorIsm ServerM12EM320F

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Severity
MEDIUM4.8
Exploit prediction
EPSS 0.3%

Description

iSM client versions from V5.1 prior to V12.1 running on NEC Storage Manager or NEC Storage Manager Express does not verify a server certificate properly, which allows a man-in-the-middle attacker to eavesdrop on an encrypted communication or alter the communication via a crafted certificate.

Affected

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

Ism Server· NEC
95%
5.1 ≤ v < 12.1
Affected range stops below 12.1, so it looks safe — our inference, not a vendor statement
nec-m120 (environment) · nec-m12e (environment) · nec-m320 (environment) · nec-m320f (environment)
M120· NECdevice
80%
All versions
M12E· NECdevice
80%
All versions
M320· NECdevice
80%
All versions
M320F· NECdevice
80%
All versions

Remediation

No guide yet

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

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://jpn.nec.com/security-info/secinfo/nv20-015.html
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN10100024/index.html

CVSS

4.8MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295

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