CVE-2021-20617 json
Improper access control vulnerability in acmailer ver.
published 2021-01-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8035
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.4%
- EPSS 7.4% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.
Exploit prediction
7.41% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Acmailer - Improper Access Control to OS Command Injection nuclei detection template
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- Seeds Co.,Ltd. acmailer and acmailer DB
References
-
acmailer.jp
/info/de.cgi?id=101
vendor-advisory
-
jvn.jp
/en/jp/JVN35906450/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20617
- NVD CVE-2021-20617
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.