CVE-2023-27390

Name: CVE-2023-27390
Creator: NVD / NIST
Published: 2023-07-05T16:15:09.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.50%

Last modified Jun 17, 2026

CVE-2023-27390 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A heap-based buffer overflow vulnerability exists in the Sequence::DrawText functionality of Diagon v1.0.139. A specially crafted markdown file can lead to arbitrary code execution. EPSS estimates a 0.50% chance of exploitation in the next 30 days.

Description

A heap-based buffer overflow vulnerability exists in the Sequence::DrawText functionality of Diagon v1.0.139. A specially crafted markdown file can lead to arbitrary code execution. A victim would need to open a malicious file to trigger this vulnerability.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.50%

39.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Diagon Project	Diagon	1.0.139

References

https://talosintelligence.com/vulnerability_reports/TALOS-2023-1744Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1744Exploit, Third Party Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2023-1744

Timeline

Published: Jul 5, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-27390?

How severe is CVE-2023-27390?

CVE-2023-27390 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.50% probability of exploitation in the next 30 days.

How do I fix CVE-2023-27390?

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-2023-27390?

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

Scan your code now

Source: NVD / NIST