Astra Linux – Vulnerability in dovecot

The ManageSieve AUTHENTICATE command crashes when using “literal” as the initial response to SASL. This can be used to repeatedly crash the ManageSieve service, rendering it unavailable to other users. It’s recommended to control access to the ManageSieve port or disable the service if it’s not...

Astra Linux – Vulnerability in dovecot

The attacker can upload a malicious Sieve script through the ManageSieve service or locally to bypass the configured CPU time limits for Sieve up to 130 times the configured limit. This allows the attacker to degrade server performance and bypass the configured CPU time limits for Sieve scripts. ...

SUSE CVE-2026-40013

An attacker that has valid credentials can submit a Sieve script containing an extreme numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script. This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of...

CVE-2026-40019

A flaw was found in Dovecot's ManageSieve login process. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted, truncated quoted argument. This action causes the process to enter an infinite loop, consuming excessive CPU resources. Repeated exploitation can lea...

CVE-2026-40013

A flaw was found in Dovecot. An authenticated attacker can submit a specially crafted Sieve script containing an extreme numeric literal to the ManageSieve service. This action triggers an out-of-bounds write during script compilation, leading to memory corruption and a crash of the ManageSieve...

CVE-2026-33605

A flaw was found in Dovecot. An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. This can lead to a denial of service for Sieve script management, affecting either the attacker's connection or all connections handled by t...

SUSE CVE-2026-33605

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...

SUSE CVE-2026-40019

An unauthenticated attacker can send a truncated quoted argument to the ManageSieve login process, which makes it spin in an infinite loop consuming CPU. This can cause degradation or denial of service for Sieve script management, and repeated connections can consume all available CPU on the...

Linux Distros Unpatched Vulnerability : CVE-2026-40013

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An attacker that has valid credentials can submit a Sieve script containing an extreme numeric literal, which causes an out-of-bounds write when the ManageSieve...

Linux Distros Unpatched Vulnerability : CVE-2026-40019

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An unauthenticated attacker can send a truncated quoted argument to the ManageSieve login process, which makes it spin in an infinite loop consuming CPU. This c...

Linux Distros Unpatched Vulnerability : CVE-2026-33605

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode...

CVE-2026-40013

An attacker that has valid credentials can submit a Sieve script containing an extreme numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script. This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of...

AZL-98268 CVE-2026-40013 affecting package dovecot 2.3.20-1

An attacker that has valid credentials can submit a Sieve script containing an extreme numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script. This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of...

CVE-2026-40019

An unauthenticated attacker can send a truncated quoted argument to the ManageSieve login process, which makes it spin in an infinite loop consuming CPU. This can cause degradation or denial of service for Sieve script management, and repeated connections can consume all available CPU on the...

ALPINE-CVE-2026-40019

An unauthenticated attacker can send a truncated quoted argument to the ManageSieve login process, which makes it spin in an infinite loop consuming CPU. This can cause degradation or denial of service for Sieve script management, and repeated connections can consume all available CPU on the...

AZL-98259 CVE-2026-33605 affecting package dovecot 2.3.20-1

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...

CVE-2026-33605

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...

ALPINE-CVE-2026-33605

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...

EUVD-2026-67668

An unauthenticated attacker can send a truncated quoted argument to the ManageSieve login process, which makes it spin in an infinite loop consuming CPU. This can cause degradation or denial of service for Sieve script management, and repeated connections can consume all available CPU on the...

CVE-2026-40019

Open-Xchange Dovecot is affected by a denial-of-service vulnerability in the ManageSieve login process . An unauthenticated attacker can send a truncated quoted argument , causing the process to spin in an infinite loop and consume CPU. Repeated connections can exhaust all available CPU on the se...