CVE-2026-24423
Last modified
CVE-2026-24423 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 87.69% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Smartertools | Smartermail | < 100.0.9511 |
References
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24423US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-24423?
How severe is CVE-2026-24423?
How do I fix CVE-2026-24423?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-24418OpenSTAManager is an open source management software for tec…6.5
- CVE-2026-24419OpenSTAManager is an open source management software for tec…6.5
- CVE-2026-2442The Page Builder: Pagelayer – Drag and Drop website builder …5.3
- CVE-2026-24420phpMyFAQ is an open source FAQ web application. Versions 4.0…6.5
- CVE-2026-24421phpMyFAQ is an open source FAQ web application. Versions 4.0…6.5
- CVE-2026-24422phpMyFAQ is an open source FAQ web application. In versions …7.5
- CVE-2026-24425Twig versions 2.16.x and 3.9.0 through 3.25.x contain a sand…9.9
- CVE-2026-24426Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prio…6.1
- CVE-2026-24427Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prio…5.5
- CVE-2026-24428Shenzhen Tenda W30E V2 firmware versions up to and including…8.8
- CVE-2026-24429Shenzhen Tenda W30E V2 firmware versions up to and including…9.8
- CVE-2026-2443A flaw was identified in libsoup, a widely used HTTP library…5.3
Are you affected by CVE-2026-24423?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST