CVE-2026-27856: falha de alta gravidade em Open-Xchange GmbH OX Dovecot Pro
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Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.4epss 0.4%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Produtos afetados
Open-Xchange GmbH · OX Dovecot ProCVEs relacionadas — Open-Xchange GmbH OX Dovecot Pro
No mesmo produto, das mais perigosas para as menos.
Referências
https://access.redhat.com/errata/RHSA-2026:26564https://access.redhat.com/security/cve/CVE-2026-27856https://bugzilla.redhat.com/show_bug.cgi?id=2452171https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.jsonhttps://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27856.json