CVE-2026-40013 (GCVE-0-2026-40013)
Vulnerability from cvelistv5
Published
2026-08-28 10:12
Modified
2026-08-28 15:54
CWE
  • CWE-124 - Buffer Underwrite ('Buffer Underflow')
Summary
An attacker that has valid credentials can submit a Sieve script containing an extreme numeric literal, which causes an out-of-bounds write when the ManageSieve service compiles the script. This causes memory corruption and an observed crash of the ManageSieve process, resulting in denial of service for script management. This might be able to be used for remote code execution. Disable the ManageSieve service if users do not need remote Sieve script management. Update to non-vulnerable version. No publicly available exploits are known.
Impacted products
Vendor Product Version
Open-Xchange GmbH OX Dovecot Pro Version: 2.3.0   
Version: 3.0.0   
Version: 3.1.0   
Create a notification for this product.
Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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