7.5

CVE-2026-27858

Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory.
 Attacker can force managesieve-login to be unavailable by repeatedly crashing the process. Protect access to managesieve protocol, or install fixed version. No publicly available exploits are known.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Dovecot ≫ Dovecot Version < 2.4.3
Open-xchange ≫ Dovecot SwEditionpro Version < 2.3.22.1
Open-xchange ≫ Dovecot SwEditionpro Version >= 3.0.0 < 3.0.5
Open-xchange ≫ Dovecot SwEditionpro Version >= 3.1.0 < 3.1.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.03% 0.101
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@open-xchange.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.