TI-2026-19690 Aliases CVE-2026-24423 GHSA-7jpw-fm5p-f98m

SmarterTools SmarterMail < Build 9511 Unauthenticated RCE via ConnectToHub API

CRITICAL 99Exploited in the wildCWE-306Published 2026-01-23 · Updated 2026-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method. The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS command. This command will be executed by the vulnerable application.

Why it matters now

Exploitation Active In CISA KEV since 2026-02-05CISA due date 2026-02-26Known ransomware use

EPSS 0.88177 99th percentileScored 2026-11-07

Fix Fixed SmarterMail (SmarterTools): 100.0.9511

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Active
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
SmarterTools	SmarterMail	before 100.0.9511	100.0.9511	Patch available	CNA

SmarterMail VendorSmarterTools Affected before 100.0.9511 Fixed in 100.0.9511 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:smartertools:smartermail::::::::	before 100.0.9511	Vulnerable	SmarterTools

cpe:2.3:a:smartertools:smartermail:*:*:*:*:*:*:*:* Versions before 100.0.9511 Vulnerable ·SmarterTools

Remediation

Fix · CNA SmarterMail (SmarterTools) Fixed in 100.0.9511

Timeline

2026-02-05 Added to CISA KEV
2026-10-02 Threatist record created from CVE-2026-24423
2026-10-03 Alias added: GHSA-7jpw-fm5p-f98m

References

Patch 1

https://www.smartertools.com/smartermail/release-notes/current

Advisory 1

https://code-white.com/public-vulnerability-list/#systemadminsettingscontrollerconnecttohub-missing-authentication-in-smartermail

TI-2025-32755 Upload arbitrary files in SmarterTools SmarterMail KEVCVSS 3.1CRITICAL 10.0
TI-2026-19133 SmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API KEVCVSS 4.0CRITICAL 9.3
TI-2019-05110 SmarterTools SmarterMail 16.x before build 6985 allows deserialization of untrusted data. CVSS 3.0CRITICAL 9.8
TI-2019-05109 SmarterTools SmarterMail 16.x before build 6985 allows directory traversal. CVSS 3.0MEDIUM 6.5
TI-2021-12079 SmarterTools SmarterMail 16.x through 100.x before 100.0.7803 allows remote code execution. CVSS 3.1CRITICAL 9.8
TI-2026-06870 SmarterTools SmarterMail < Build 9560 Server Local File Inclusion via the /api/v1/report/summary/{type} API CVSS 4.0HIGH 8.7

See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences