CVE-2023-5686

Name: CVE-2023-5686
Creator: NVD / NIST
Published: 2023-10-20T17:15:08.747+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2023-5686 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.

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

0.79%

51.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Radare	Radare2	< 5.9.0
Fedoraproject	Fedora	37
Fedoraproject	Fedora	38

References

https://github.com/radareorg/radare2/commit/1bdda93e348c160c84e30da3637acef26d0348dePatch
https://huntr.com/bounties/bbfe1f76-8fa1-4a8c-909d-65b16e970be0Exploit, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/64KUV6OGEVQ75QOV35PUVVDOJTKSJHYN/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SOZ6XCADVAPAIHMVSV3FUAN742BHXF55/Mailing List, Third Party Advisory
https://github.com/radareorg/radare2/commit/1bdda93e348c160c84e30da3637acef26d0348dePatch
https://huntr.com/bounties/bbfe1f76-8fa1-4a8c-909d-65b16e970be0Exploit, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/64KUV6OGEVQ75QOV35PUVVDOJTKSJHYN/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SOZ6XCADVAPAIHMVSV3FUAN742BHXF55/Mailing List, Third Party Advisory

Timeline

Published: Oct 20, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5686?

Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.

How severe is CVE-2023-5686?

CVE-2023-5686 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5686?

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-2023-5686?

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

Scan your code now

Source: NVD / NIST