CVE-2023-36659

CRITICALNVD 9.89.8—

9.8

An issue was discovered in OPSWAT MetaDefender KIOSK 4.6.1.9996. Long inputs were not properly processed, which allows remote attackers to cause a denial of service (loss of communication).

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 83.8%
KEV: Not listed

Published

September 15, 2023

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://docs.opswat.com/mdkiosk
cve@mitrehttps://docs.opswat.com/mdkiosk/release-notes/cve-2023-36659
af854a3a-2127-422b-91ae-364da2661108https://docs.opswat.com/mdkiosk
af854a3a-2127-422b-91ae-364da2661108https://docs.opswat.com/mdkiosk/release-notes/cve-2023-36659

Weakness Classification(1)

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

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

Data Freshness Timeline

(refreshed 18× 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.

2026-06-06 13:46 UTCepss_batch
2026-06-06 13:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
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
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-29 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2023-36659?

CVE-2023-36659 is a critical vulnerability published on September 15, 2023. An issue was discovered in OPSWAT MetaDefender KIOSK 4.6.1.9996. Long inputs were not properly processed, which allows remote attackers to cause a denial of service (loss of communication).

When was CVE-2023-36659 disclosed?

CVE-2023-36659 was first published in the National Vulnerability Database on September 15, 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-2023-36659 actively exploited?

CVE-2023-36659 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-36659?

CVE-2023-36659 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-36659?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-36659, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-36659

Explore →

Is Your Infrastructure Affected by CVE-2023-36659?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2023-36659

📅 Published

🔄 Last Modified

🔗 References (4)