VULNERABILITY INTELLIGENCE
CVE-2026-27856
CVSS score7.4 HIGH
EPSS probability0.40%
CISA KEVNot currently listed
Published2026-03-27
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
Weakness classification
- security@open-xchange.com: CWE-287
- nvd@nist.gov: NVD-CWE-Other
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-208