ZeroHour

CVE-2025-59028

CVSS 3.1
7.5 high
EPSS
<1%p38
Published
()
Modified
Description

When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.

Vendors
dovecotopen-xchange
Products
dovecot
Weakness
CWE-20
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

In the news

No ingested article mentions this CVE yet.