CVE-2026-73209 - Vulnerability Details - OpenCVE

An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable version. No publicly available exploits are known.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json

History

Fri, 28 Aug 2026 13:45:00 +0000

Type	Values Removed	Values Added
Title		Stack Exhaustion in OX Dovecot Causing IMAP Denial of Service

Fri, 28 Aug 2026 11:30:00 +0000

Type	Values Removed	Values Added
Description		An attacker that has valid credentials can send crafted compressed data that causes the affected process to exhaust its stack and crash. The affected process is terminated, which can cause degradation or denial of service for IMAP. Update to non-vulnerable version. No publicly available exploits are known.
Weaknesses		CWE-674
References		https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: OX

Published: 2026-08-28T10:12:33.625Z

Updated: 2026-08-28T15:53:12.773Z

Reserved: 2026-08-11T13:14:10.017Z

Link: CVE-2026-73209

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-08-28T12:16:31.247

Modified: 2026-08-28T20:19:45.167

Link: CVE-2026-73209

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-28T13:30:07Z

Weaknesses

CWE-674

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