A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4 under SSL VPN web portal may allow an attacker to execute unauthorized malicious script code via the "err" parameter of the error process HTTP requests.
CVE-2019-5588
MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.1Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EPSS
- 53.2%
- KEV
- Not listed
Published
June 4, 2019
Last Modified
November 21, 2024
References (4)
- psirt@fortinethttp://www.securityfocus.com/bid/108618
- psirt@fortinethttps://fortiguard.com/advisory/FG-IR-19-034
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/108618
- af854a3a-2127-422b-91ae-364da2661108https://fortiguard.com/advisory/FG-IR-19-034
Frequently asked(5)
What is CVE-2019-5588?
CVE-2019-5588 is a medium vulnerability published on June 4, 2019. A reflected Cross-Site-Scripting (XSS) vulnerability in Fortinet FortiOS 6.0.0 to 6.0.4 under SSL VPN web portal may allow an attacker to execute unauthorized malicious script code via the "err" parameter of the error process HTTP requests.
When was CVE-2019-5588 disclosed?
CVE-2019-5588 was first published in the National Vulnerability Database on June 4, 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-2019-5588 actively exploited?
CVE-2019-5588 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 53.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2019-5588?
CVE-2019-5588 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2019-5588?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-5588, 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
Explore the affected products and dependency analysis for CVE-2019-5588
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