CVEvulnerability

CVE-2026-33605

7.5 HIGH Published 2026-08-28 Modified 2026-09-03 Official page ↗
Status
Deferred
Published
2026-08-28
Last modified
2026-09-03
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400

Description

An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode (default for community releases), only the attacker's own connection is terminated. If running in high-performance mode (default for Pro releases), all connections handled by the same managesieve-login process are terminated. Repeating the attack can cause denial of service for Sieve script management. Restrict network access to the ManageSieve service to trusted clients. Update to non-vulnerable version. No publicly available exploits are known.

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References