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Fencer Vulns
medium 5.1

CVE-2023-5686 json

Heap-based Buffer Overflow in radareorg/radare2

published 2023-10-20 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57976

cvss
5.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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

Patch / fix

  • radareorg radareorg/radare2 5.9.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-5686 updated cvss 5.1

radare2: heap-buffer-overflow in /radare2/shlr/java/code.c:211:21 in java_print_opcode

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • huntr.com https://huntr.com/bounties/bbfe1f76-8fa1-4a8c-909d-65b16e970be0 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 5.1 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • radareorg radareorg/radare2

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.