CVE-2020-5684 json
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 certifi…
published 2020-12-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-26843
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- nec ism_server 12.1
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
Affected products
- NEC Corporation Management software for NEC Storage disk array system
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
jpn.nec.com
/security-info/secinfo/nv20-015.html
vendor-advisory
-
jvn.jp
/en/jp/JVN10100024/index.html
third-party-advisory
Sources
- CVE List CVE-2020-5684
- NVD CVE-2020-5684
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.