P4Verified

CVE-2026-104660: hMailServer 6.0.0 to before 6.3.6

CVE-2026-104660. CVSS 3.1 base score 7.8 (HIGH, Vendor/CNA).

Affected technology

hMailServer · 6.0.0 to before 6.3.6
Progressive Robot Ltd

Description’s affected range: through 6.3.5 (Windows only) lets a local interactive user with no hMailServer credential read and write arbitrary files as the service account and queue mail as any sender

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Vendor/CNA’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 2026-10-08 17:34:51.002344+00:00

CWE: CWE-862
CCR priority: 31.2 /100 (P4)
CVSS 3.1: 7.8 /10 · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · Vendor/CNA
KEV: no

Provenance

GitHub Advisory Database · Source record · observed 2026-10-08 18:27:24.781324+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-104660.html