CVE-2026-27856EPSS p32.2%
CVE-2026-27856CVE-2026-27856
dovecot / dovecot
Description
Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.
Scoring
| CVSS | 7.4 () |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| EPSS | 0.39% probability of exploitation · percentile 32.2% · 2026-08-13T12:03:51Z |
| Last modified | 2026-07-15 |