CVE-2023-51847

HIGHNVD 7.57.5—Elevated

7.5

An issue in obgm and Libcoap v.a3ed466 allows a remote attacker to cause a denial of service via thecoap_context_t function in the src/coap_threadsafe.c:297:3 component.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 55.1%
KEV: Not listed

Published

June 6, 2024

Last Modified

April 15, 2026

References (2)

cve@mitrehttps://github.com/obgm/libcoap/issues/1302
af854a3a-2127-422b-91ae-364da2661108https://github.com/obgm/libcoap/issues/1302

Weakness Classification(1)

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

CWE-400Uncontrolled Resource Consumption (Denial of Service)

Data Freshness Timeline

(refreshed 16× 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.

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Frequently asked(5)

What is CVE-2023-51847?

CVE-2023-51847 is a high vulnerability published on June 6, 2024. An issue in obgm and Libcoap v.a3ed466 allows a remote attacker to cause a denial of service via thecoapcontextt function in the src/coap_threadsafe.c:297:3 component.

When was CVE-2023-51847 disclosed?

CVE-2023-51847 was first published in the National Vulnerability Database on June 6, 2024, 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-2023-51847 actively exploited?

CVE-2023-51847 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 55.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-51847?

CVE-2023-51847 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2023-51847?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-51847, 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-2023-51847

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-51847?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (2)

Frequently asked(5)

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