CVE-2021-20618 json
Privilege chaining vulnerability in acmailer ver.
published 2021-01-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8036
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.3%
- EPSS 3.3% chance of exploitation in 30 days, percentile 88%
- public exploits
- 0
- none known
Summary
Privilege chaining vulnerability in acmailer ver. 4.0.2 and earlier, and acmailer DB ver. 1.1.4 and earlier allows remote attackers to bypass authentication and to gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.
Exploit prediction
3.34% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).
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
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
acmailer.jp
/info/de.cgi?id=101
vendor-advisory
-
jvn.jp
/en/jp/JVN35906450/index.html
third-party-advisory
Sources
- CVE List CVE-2021-20618
- NVD CVE-2021-20618
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.