CVE-2023-42786

MEDIUMNVD 6.56.5—

6.5

A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 66.5%
KEV: Not listed

Published

January 14, 2025

Last Modified

January 17, 2025

References (1)

psirt@fortinethttps://fortiguard.fortinet.com/psirt/FG-IR-23-293

Weakness Classification(1)

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

CWE-476NULL Pointer Dereference

Data Freshness Timeline

(refreshed 17× 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
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2026-06-05 22:46 UTCepss_batch
2026-06-05 22:46 UTCepss_batch
2026-06-05 06:09 UTCepss_batch
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2026-06-04 13:11 UTCepss_batch
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2026-06-02 20:12 UTCepss_batch
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2026-06-01 13:51 UTCepss_batch
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2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-30 13:35 UTCEG score recompute
2026-05-30 13:35 UTCGHSA enrichment
2026-05-29 13:43 UTCepss_batch

Frequently asked(5)

What is CVE-2023-42786?

CVE-2023-42786 is a medium vulnerability published on January 14, 2025. A null pointer dereference in FortiOS versions 7.4.0 through 7.4.1, 7.2.0 through 7.2.5, 7.0 all versions, 6.4 all versions , 6.2 all versions and 6.0 all versions allows attacker to trigger a denial of service via a crafted http request.

When was CVE-2023-42786 disclosed?

CVE-2023-42786 was first published in the National Vulnerability Database on January 14, 2025, with the most recent update on January 17, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-42786 actively exploited?

CVE-2023-42786 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 66.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-42786?

CVE-2023-42786 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2023-42786?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42786, 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-2023-42786

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-42786?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)