CVE-2023-32255

MEDIUMNVD 5.35.3—

5.3

A flaw was found in the Linux kernel's ksmbd component. A memory leak can occur if a client sends a session setup request with an unknown NTLMSSP message type, potentially leading to resource exhaustion.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 38.1%
KEV: Not listed

Published

August 2, 2025

Last Modified

April 15, 2026

References (4)

secalert@redhathttps://access.redhat.com/security/cve/CVE-2023-32255
secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=2385884
secalert@redhathttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d7cb549c2ca20e1f07593f15e936fd54b763028
secalert@redhathttps://www.zerodayinitiative.com/advisories/ZDI-23-703/

Weakness Classification(1)

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

CWE-772Missing Release of Resource after Effective Lifetime

Data Freshness Timeline

(refreshed 15× 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.

2026-06-02 21:40 UTCOSV refresh
2026-06-02 20:12 UTCepss_batch
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2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
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2026-05-29 13:43 UTCepss_batch
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2026-05-28 13:43 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch

Frequently asked(5)

What is CVE-2023-32255?

CVE-2023-32255 is a medium vulnerability published on August 2, 2025. A flaw was found in the Linux kernel's ksmbd component. A memory leak can occur if a client sends a session setup request with an unknown NTLMSSP message type, potentially leading to resource exhaustion.

When was CVE-2023-32255 disclosed?

CVE-2023-32255 was first published in the National Vulnerability Database on August 2, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-32255 actively exploited?

CVE-2023-32255 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-32255?

CVE-2023-32255 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2023-32255?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-32255, 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.

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CVE-2023-32255

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-32255?

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Published

Last Modified

References (4)

Frequently asked(5)

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