CVE-2023-6381

Name: CVE-2023-6381
Creator: NVD / NIST
Published: 2023-12-13T11:15:07.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2023-6381 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Improper input validation vulnerability in Newsletter Software SuperMailer affecting version 11.20.0.2204. An attacker could exploit this vulnerability by sending a malicious configuration file (file with SMB extension) to a user via a link or email attachment and persuade the user to open the file with the affected software on the local system. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

Improper input validation vulnerability in Newsletter Software SuperMailer affecting version 11.20.0.2204. An attacker could exploit this vulnerability by sending a malicious configuration file (file with SMB extension) to a user via a link or email attachment and persuade the user to open the file with the affected software on the local system. A successful exploit could allow the attacker to crash the application when attempting to load the malicious file.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.22%

12.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Supermailer	Supermailer	11.20.0.2204

References

https://www.incibe.es/en/incibe-cert/notices/aviso/improper-input-validation-newsletter-software-supermailerThird Party Advisory
https://www.incibe.es/en/incibe-cert/notices/aviso/improper-input-validation-newsletter-software-supermailerThird Party Advisory

Timeline

Published: Dec 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-6381?

How severe is CVE-2023-6381?

CVE-2023-6381 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2023-6381?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-6381?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST