CVE-2023-39427

Name: CVE-2023-39427
Creator: NVD / NIST
Published: 2023-10-26T20:15:08.51+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.20%

Last modified Jun 17, 2026

CVE-2023-39427 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share v12 SP0 Build (1204.77), the affected applications lack proper validation of user-supplied data when parsing XE files. This could lead to an out-of-bounds write. EPSS estimates a 0.20% chance of exploitation in the next 30 days.

Description

In Ashlar-Vellum Cobalt, Xenon, Argon, Lithium, and Cobalt Share v12 SP0 Build (1204.77), the affected applications lack proper validation of user-supplied data when parsing XE files. This could lead to an out-of-bounds write. An attacker could leverage this vulnerability to execute arbitrary code in the context of the current process.

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

0.20%

10.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ashlar	Cobalt	< 12.4.1204.200
Ashlar	Graphite	<= 13.0.48
Ashlar	Xenon	< 12.4.1204.200
Ashlar	Argon	< 12.4.1204.200
Ashlar	Lithium	< 12.4.1204.200

References

https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-03Third Party Advisory, US Government Resource
https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-03Third Party Advisory, US Government Resource

Timeline

Published: Oct 26, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-39427?

How severe is CVE-2023-39427?

CVE-2023-39427 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.20% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39427?

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-2023-39427?

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

Scan your code now

Source: NVD / NIST