CVE-2021-20618
CRITICALCVSS 9.8/10EPSS 3.30%
Last modified
CVE-2021-20618 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Privilege chaining vulnerability in acmailer ver. 4.0.2 and earlier, and acmailer DB ver. EPSS estimates a 3.30% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Acmailer | Acmailer | <= 4.0.2 |
| Acmailer | Acmailer Db | <= 1.1.4 |
References
- https://jvn.jp/en/jp/JVN35906450/index.htmlThird Party Advisory
- https://www.acmailer.jp/info/de.cgi?id=101Vendor Advisory
- https://jvn.jp/en/jp/JVN35906450/index.htmlThird Party Advisory
- https://www.acmailer.jp/info/de.cgi?id=101Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20618?
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.
How severe is CVE-2021-20618?
CVE-2021-20618 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.30% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20618?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20618?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST