7.5
Élevée
CVE-2026-42391 An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in,…
Description
An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by the same process. This can cause degradation or denial of service for IMAP logins. Limit the number of connections handled by a single imap-login process. This has a performance impact though. Update to non-vulnerable version. No publicly available exploits are known.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| OX Dovecot Pro 3.1 | 3.1.0 → < 3.1.6 | 3.1.6 |
| OX Dovecot Pro 3.0 | 3.0.0 → < 3.0.7 | 3.0.7 |
| OX Dovecot Pro 2.3 | 2.3.0 → < 2.3.22.2 | 2.3.22.2 |
| OX Dovecot CE 2.3 | 2.3.0 → < 2.4.5 | 2.4.5 |
Autres CVE de OX Dovecot Pro
Les 44 CVE de OX Dovecot Pro →
CVE-2026-73209
An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust…
6.5
Moyenne
CVE-2026-73208
An attacker that holds a token intended for a different purpose can authenticate, because when an OAuth2 token…
7.4
Élevée
CVE-2026-52687
An attacker that has valid credentials can select a compression algorithm for the IMAP connection whose decompression…
6.5
Moyenne
CVE-2026-52681
Sieve CPU resource usage is tracked in the compiled script, so an attacker that has valid credentials can reset the…
3.1
Faible