The vulnerability of the dovecot-acl file in Dovecot and OX Dovecot Pro mail servers, due to access control deficiencies, allows attackers to trigger service interruptions.
🗓️ 23 Jul 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 10 Views
| Reporter | Title | Published | Views | Family All 46 |
|---|---|---|---|---|
 | CVE-2026-40020 | 12 May 202613:28 | – | attackerkb |
 | CVE-2026-40020 | 12 May 202613:28 | – | alpinelinux |
 | Astra Linux – Vulnerability in dovecot | 14 Sep 202612:01 | – | astralinux |
 | Open-Xchange OX Dovecot Pro 访问控制错误漏洞 | 12 May 202600:00 | – | cnnvd |
 | CVE-2026-40020 | 12 May 202613:28 | – | cve |
 | CVE-2026-40020 | 12 May 202613:28 | – | cvelist |
 | [SECURITY] [DLA 4617-1] dovecot security update | 5 Jun 202612:28 | – | debian |
| [SECURITY] [DSA 6313-1] dovecot security update | 31 May 202618:25 | – | debian |
 | CVE-2026-40020 | 12 May 202613:28 | – | debiancve |
 | Debian dla-4617 : dovecot-auth-lua - security update | 5 Jun 202600:00 | – | nessus |
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22 Sep 2026 00:00Current
6.1Medium risk
Vulners AI Score6.1
CVSS 24
CVSS 34.3
EPSS0.0029