CVE-2010-3780 Denial of service in n/a

What is CVE-2010-3780?

CVE-2010-3780 is a medium-severity denial of service vulnerability in Dovecot Dovecot, published on 6 Oct 2010. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Dovecot 1.2.x before 1.2.15 allows remote authenticated users to cause a denial of service (master process outage) by simultaneously disconnecting many (1) IMAP or (2) POP3 sessions.

Which versions are affected by CVE-2010-3780?

It affects 1 product.

Products include Dovecot Dovecot.

How do I fix CVE-2010-3780?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2010-3780 being exploited?

There is no known exploitation of CVE-2010-3780 in the wild and no public exploit code.

Other vulnerabilities in Dovecot Dovecot

• CVE-2026-24031 Auth bypass in OX Dovecot Pro High 7.7
• CVE-2025-59032 Denial of service in OX Dovecot Pro High 7.5
• CVE-2026-27858 Denial of service in OX Dovecot Pro High 7.5
• CVE-2021-29157 Path traversal in n/a High 7.5
• CVE-2020-10957 Null dereference in n/a High 7.5

All Dovecot Dovecot vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2010-3780, GHSA-cc69-pg9v-6fx9.