CVE-2023-5686
Heap-based Buffer Overflow in radareorg/radare2
CVE-2023-5686 is a medium vulnerability (CVSS 5.1) in Radare Radare2, published October 20, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 57th percentile. No source names a fixed version.
- Severity
- 5.1 MediumCVSS 3.0, CVE List
- Exploit chance
- 0.80%EPSS, 57th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
Description
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- Low
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
radare2Mageia:9 From an advisory covering 2 CVEs | before 5.8.8-1.1.mga9 | 5.8.8-1.1.mga9 |
radare2Ubuntu:16.04:LTS | All versions, plus listed versions 0.9.6-3.1ubuntu1 | None known |
radare2Ubuntu:Pro:18.04:LTS | All versions, plus listed versions 1.6.0+dfsg-12.0.0+dfsg-12.1.0+dfsg-12.3.0+dfsg-12.3.0+dfsg-22.3.0+dfsg-2ubuntu0.1~esm1 | None known |
radare2Ubuntu:Pro:20.04:LTS | All versions, plus listed versions 3.2.1+dfsg-5build14.0.0+dfsg-14.2.1+dfsg-14.2.1+dfsg-24.2.1+dfsg-2ubuntu0.1~esm1 | None known |
radare2Ubuntu:Pro:24.04:LTS | All versions, plus listed versions 5.5.0+dfsg-1ubuntu15.5.0+dfsg-1.1ubuntu25.5.0+dfsg-1.1ubuntu35.5.0+dfsg-1.1ubuntu3+esm1 | None known |
radare2Ubuntu:25.10 | All versions, plus listed versions 5.9.8+dfsg-25.9.8+dfsg-2ubuntu0.25.10.15.9.8+dfsg-2ubuntu0.25.10.2 | None known |
radare2Ubuntu:26.10 | All versions, plus listed versions 6.0.7+ds-16.1.6+ds-26.1.6+ds-36.1.8+ds-1 | None known |
radare2Ubuntu:26.04:LTS | All versions, plus listed versions 5.9.8+dfsg-26.0.4+dfsg-16.0.7+ds-1 | None known |
What each source reports
CVE List Score used
Heap-based Buffer Overflow in radareorg/radare2
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
- Record
CVE-2023-5686- CVSS 3.0
- 5.1 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-122
- Updated
- 2026-11-02
EUVDEUVD-2023-57976
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
- Record
EUVD-2023-57976- CVSS 3.0
- 5.1 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-39v7-36rj-8jh4
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
- Record
GHSA-39v7-36rj-8jh4- CVSS 3.0
- 5.1 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-122, CWE-787
- Updated
- 2026-11-02
NVD
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
- Record
CVE-2023-5686- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 3.0
- 5.1 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-122, CWE-787
- Updated
- 2026-11-02
OSV
Heap-based Buffer Overflow in radareorg/radare2
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
- Record
CVE-2023-5686- CVSS 3.0
- 5.1 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Weakness
- CWE-122
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-5686
Heap-based Buffer Overflow in GitHub repository radareorg/radare2 prior to 5.9.0.
- Record
UBUNTU-CVE-2023-5686- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 3.0
- 5.1 Medium
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L - Updated
- 2026-11-02
OSVMGASA-2024-0044No score
Updated radare2 packages fix security vulnerabilities
This update fixes two security issues: CVE-2023-4322 - heap-buffer-overflow in the brainfuck dissassembler CVE-2023-5686 - heap-buffer-overflow in /radare2/shlr/java/code.c
- Record
MGASA-2024-0044- Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
huntr.com/bounties/bbfe1f76-8fa1-4a8c-909d-65b16e970be0
github.com/radareorg/radare2/commit/1bdda93e348c160c84e30da3637acef26d0348de
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/64KUV6OGEVQ75QOV35PUVVDOJTKSJHYN
nvd.nist.gov/vuln/detail/CVE-2023-5686