How severe is CVE-2023-5686?

CVE-2023-5686 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-5686 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5686?

CVE-2023-5686 primarily affects Radare Radare2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-5686?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-5686 published?

CVE-2023-5686 was published on 2023-10-20 and last updated on 2026-06-17.

CVE-2023-5686

CVE-2023-5686 is a high-severity vulnerability in Radare Radare2 with a CVSS 3.x base score of 8.8. 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Radare Radare2
Published: 2023-10-20
Last modified: 2026-06-17

Description

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

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 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-5686 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5686?: CVE-2023-5686 primarily affects Radare Radare2. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-5686?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-5686 published?: CVE-2023-5686 was published on 2023-10-20 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*

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