CVE-2023-5568

MEDIUMNVD 5.95.9—

5.9

A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service.

CVSS v3: 5.9
EG Score: 5.9(medium)
EPSS: 94.0%
KEV: Not listed

Published

October 25, 2023

Last Modified

November 21, 2024

References (9)

secalert@redhathttps://access.redhat.com/security/cve/CVE-2023-5568
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2245174
secalert@redhathttps://bugzilla.samba.org/show_bug.cgi?id=15491
secalert@redhathttps://www.samba.org/samba/history/samba-4.19.2.html
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-5568
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2245174
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.samba.org/show_bug.cgi?id=15491
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20231124-0007/
af854a3a-2127-422b-91ae-364da2661108https://www.samba.org/samba/history/samba-4.19.2.html

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:11 UTCepss_batch
2026-06-04 13:11 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-24 15:09 UTCEG score recompute
2026-05-24 15:09 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2023-5568?

CVE-2023-5568 is a medium vulnerability published on October 25, 2023. A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service.

When was CVE-2023-5568 disclosed?

CVE-2023-5568 was first published in the National Vulnerability Database on October 25, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-5568 actively exploited?

CVE-2023-5568 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-5568?

CVE-2023-5568 has a CVSS v3 base score of 5.9 (NVD).

How do I remediate CVE-2023-5568?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-5568, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-5568

📅 Published

🔄 Last Modified

🔗 References (9)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-5568?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (9)

Frequently asked(5)

Related CVEs(same CWE)