CVE-2021-20676 json
M-System DL8 series (type A (DL8-A) versions prior to Ver3.0, type B (DL8-B) versions prior to Ver3.0, type C (DL8-C) versions prior to Ver…
published 2021-03-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8094
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
M-System DL8 series (type A (DL8-A) versions prior to Ver3.0, type B (DL8-B) versions prior to Ver3.0, type C (DL8-C) versions prior to Ver3.0, type D (DL8-D) versions prior to Ver3.0, and type E (DL8-E) versions prior to Ver3.0) allows remote authenticated attackers to bypass access restriction and conduct prohibited operations via unspecified vectors.
Patch / fix
- m-system dl8-a_firmware 3.0.81
- m-system dl8-b_firmware 3.0.77
- m-system dl8-c_firmware 3.0.99
- m-system dl8-d_firmware 3.0.91
- m-system dl8-e_firmware 3.0.12
Exploit prediction
0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:P/A:N |
Affected products
- M-System Co., Ltd. M-System DL8 series
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
m-system.co.jp
/download_w/dl_dl8updaterE.html
vendor-advisory
-
jvn.jp
/en/jp/JVN47497535/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20676
- NVD CVE-2021-20676
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