CVE-2019-15705

HIGHNVD 7.57.5—

7.5

An Improper Input Validation vulnerability in the SSL VPN portal of FortiOS versions 6.2.1 and below, and 6.0.6 and below may allow an unauthenticated remote attacker to crash the SSL VPN service by sending a crafted POST request.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 69.2%
KEV: Not listed

Published

November 27, 2019

Last Modified

November 21, 2024

References (2)

psirt@fortinethttps://fortiguard.com/advisory/FG-IR-19-236
af854a3a-2127-422b-91ae-364da2661108https://fortiguard.com/advisory/FG-IR-19-236

Weakness Classification(1)

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

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 12× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2019-15705?

CVE-2019-15705 is a high vulnerability published on November 27, 2019. An Improper Input Validation vulnerability in the SSL VPN portal of FortiOS versions 6.2.1 and below, and 6.0.6 and below may allow an unauthenticated remote attacker to crash the SSL VPN service by sending a crafted POST request.

When was CVE-2019-15705 disclosed?

CVE-2019-15705 was first published in the National Vulnerability Database on November 27, 2019, 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-2019-15705 actively exploited?

CVE-2019-15705 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 69.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-15705?

CVE-2019-15705 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2019-15705?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-15705, 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-2019-15705

📅 Published

🔄 Last Modified

🔗 References (2)