How severe is CVE-2023-6381?

CVE-2023-6381 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-6381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6381?

CVE-2023-6381 affects Supermailer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6381?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-6381 published?

CVE-2023-6381 was published on 2023-12-13 and last updated on 2026-06-17.

CVE-2023-6381

CVE-2023-6381 is a low-severity vulnerability in Supermailer with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Supermailer
Published: 2023-12-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-6381?: 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.
How severe is CVE-2023-6381?: CVE-2023-6381 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-6381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6381?: CVE-2023-6381 affects Supermailer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6381?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-6381 published?: CVE-2023-6381 was published on 2023-12-13 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:supermailer:supermailer:11.20.0.2204:*:*:*:*:*:*:*

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