# CVE-2021-33582: cyrus-imapd: ELSA-2021-3492: cyrus-imapd security update (IMPORTANT)

CVE-2021-33582 is fixed in 12 products on 1 platform, first by cyrus-admin 2.5.10-3ubuntu1.1+esm1, released August 31, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-33582
- Priority: High
- CVSS: 7.5 (IMPORTANT)
- EPSS: 0.0310
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 31, 2021

## Description

ELSA-2021-3492: cyrus-imapd security update (IMPORTANT)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cyrus-admin Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-admin 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-admin-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-admin Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-admin 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-admin-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-caldav Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-caldav 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-caldav-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-caldav Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-caldav 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-caldav-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-clients Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-clients 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-clients-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-clients Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-clients 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-clients-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-common Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-common 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-common-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-common Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-common 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-common-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-imapd RHEL 8 | 0:3.0.7-20.el8_4.1 | [RHSA-2021:3492](https://patchblox.com/security/data/fix/linux/rhsa-2021-3492.md) | Sep 13, 2021 |
| Linux | cyrus-imapd Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-imapd 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-imapd-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-imapd Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-imapd 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-imapd-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-imapd ol 8 | 0:3.0.7-20.el8_4.1 | [ELSA-2021-3492](https://patchblox.com/security/data/fix/linux/elsa-2021-3492.md) | Sep 13, 2021 |
| Linux | cyrus-imapd-utils RHEL 8 | 0:3.0.7-20.el8_4.1 | [RHSA-2021:3492](https://patchblox.com/security/data/fix/linux/rhsa-2021-3492.md) | Sep 13, 2021 |
| Linux | cyrus-imapd-utils ol 8 | 0:3.0.7-20.el8_4.1 | [ELSA-2021-3492](https://patchblox.com/security/data/fix/linux/elsa-2021-3492.md) | Sep 13, 2021 |
| Linux | cyrus-imapd-vzic RHEL 8 | 0:3.0.7-20.el8_4.1 | [RHSA-2021:3492](https://patchblox.com/security/data/fix/linux/rhsa-2021-3492.md) | Sep 13, 2021 |
| Linux | cyrus-imapd-vzic ol 8 | 0:3.0.7-20.el8_4.1 | [ELSA-2021-3492](https://patchblox.com/security/data/fix/linux/elsa-2021-3492.md) | Sep 13, 2021 |
| Linux | cyrus-murder Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-murder 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-murder-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-murder Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-murder 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-murder-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-nntpd Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-nntpd 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-nntpd-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-nntpd Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-nntpd 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-nntpd-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-pop3d Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-pop3d 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-pop3d-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-pop3d Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-pop3d 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-pop3d-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-replication Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [cyrus-replication 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-cyrus-replication-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | cyrus-replication Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [cyrus-replication 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-cyrus-replication-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |
| Linux | libcyrus-imap-perl Ubuntu 18.04.6 LTS (bionic) | 2.5.10-3ubuntu1.1+esm1 | [libcyrus-imap-perl 2.5.10-3ubuntu1.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcyrus-imap-perl-2.5.10-3ubuntu1.1-esm1.md) | Aug 31, 2021 |
| Linux | libcyrus-imap-perl Ubuntu 20.04 LTS (focal) | 3.0.13-5ubuntu0.1~esm1 | [libcyrus-imap-perl 3.0.13-5ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcyrus-imap-perl-3.0.13-5ubuntu0.1-esm1.md) | Aug 31, 2021 |

---

Data as of 2026-11-11T07:45:43Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.