MEDIUMCVSS v3.1 6.5Vulnerability

CVE-2026-125393

MailEnable Enterprise Premium before 10.62 contains a heap overflow vulnerability in the IMAP X-FB-FETCH command that allows authenticated users to overflow a fixed 0x400-byte heap buffer. Attackers can supply an X-FB-USER address longer than about 1016 bytes, which is formatted without a length check, to crash the IMAP service and cause denial of service.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-10T23:33:48.924589+00:00
Epss score
0.00273
Cvss severity
MEDIUM
Cvss score
6.5
Retrieved at
2026-11-10T23:35:17+00:00
Last source
FIRST EPSS
Score
6.5
Cvss version
3.1
Cve id
CVE-2026-125393
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
First seen by Signal
2026-11-10T03:20:44+00:00
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published at
2026-11-10T00:17:13.197
Last modified
2026-11-10T00:17:13.197
Epss percentile
0.19801

Related Entities (1)

HAS_WEAKNESS (1)

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CVE-2026-125393 (CVSS v3.1 6.5) — Ninja Signal Threat Intelligence | Ninja Signal