CVE-2023-40295

Name: CVE-2023-40295
Creator: NVD / NIST
Published: 2023-08-14T04:15:11.403+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2023-40295 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. libboron in Boron 2.0.8 has a heap-based buffer overflow in ur_strInitUtf8 at string.c.. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

libboron in Boron 2.0.8 has a heap-based buffer overflow in ur_strInitUtf8 at string.c.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.74%

49.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
0branch	Boron	2.0.8

References

https://github.com/0branch/boron/issues/3Exploit, Vendor Advisory
https://github.com/0branch/boron/issues/3Exploit, Vendor Advisory

Timeline

Published: Aug 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40295?

libboron in Boron 2.0.8 has a heap-based buffer overflow in ur_strInitUtf8 at string.c.

How severe is CVE-2023-40295?

CVE-2023-40295 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40295?

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-2023-40295?

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

Scan your code now

Source: NVD / NIST