CVE-2015-5736

NONECVSS 0.0Weaponized

0.0

The Fortishield.sys driver in Fortinet FortiClient before 5.2.4 allows local users to execute arbitrary code with kernel privileges by setting the callback function in a (1) 0x220024 or (2) 0x220028 ioctl call.

CVSS v3: —
EG Score: 0.0(none)
EPSS: 85.8%
KEV: Not listed

Published

September 3, 2015

Last Modified

May 6, 2026

References (20)

cve@mitrehttp://fortiguard.com/advisory/mulitple-vulnerabilities-in-forticlient
cve@mitrehttp://packetstormsecurity.com/files/133398/FortiClient-Antivirus-Information-Exposure-Access-Control.html
cve@mitrehttp://seclists.org/fulldisclosure/2015/Sep/0
cve@mitrehttp://www.coresecurity.com/advisories/forticlient-antivirus-multiple-vulnerabilities
cve@mitrehttp://www.fortiguard.com/advisory/mulitple-vulnerabilities-in-forticlient
cve@mitrehttp://www.securityfocus.com/archive/1/536369/100/0/threaded
cve@mitrehttp://www.securitytracker.com/id/1033439
cve@mitrehttps://www.exploit-db.com/exploits/41721/
cve@mitrehttps://www.exploit-db.com/exploits/41722/
cve@mitrehttps://www.exploit-db.com/exploits/45149/
af854a3a-2127-422b-91ae-364da2661108http://fortiguard.com/advisory/mulitple-vulnerabilities-in-forticlient
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/133398/FortiClient-Antivirus-Information-Exposure-Access-Control.html
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2015/Sep/0
af854a3a-2127-422b-91ae-364da2661108http://www.coresecurity.com/advisories/forticlient-antivirus-multiple-vulnerabilities
af854a3a-2127-422b-91ae-364da2661108http://www.fortiguard.com/advisory/mulitple-vulnerabilities-in-forticlient

Data Freshness Timeline

(refreshed 8× 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 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 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 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-26 13:41 UTCEPSS rescore

Publicly available exploits

(4 references)

Working exploit code is in the public domain (1 GitHub PoC) (3 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCavielzecharia/CVE-2015-5736
First seen Sep 6, 2025
PoC for CVE-2015-5736
Open source ↗
Exploit-DBEDB-45149✓ verified
First seen Aug 5, 2018
Fortinet FortiClient 5.2.3 (Windows 10 x64 Creators) - Local Privilege Escalation
Open source ↗
Exploit-DBEDB-41722✓ verified
First seen Mar 25, 2017
Fortinet FortiClient 5.2.3 (Windows 10 x64 Post-Anniversary) - Local Privilege Escalation
Open source ↗
Exploit-DBEDB-41721✓ verified
First seen Mar 25, 2017
Fortinet FortiClient 5.2.3 (Windows 10 x64 Pre-Anniversary) - Local Privilege Escalation
Open source ↗

Frequently asked(4)

What is CVE-2015-5736?

CVE-2015-5736 is a none vulnerability published on September 3, 2015. The Fortishield.sys driver in Fortinet FortiClient before 5.2.4 allows local users to execute arbitrary code with kernel privileges by setting the callback function in a (1) 0x220024 or (2) 0x220028 ioctl call.

When was CVE-2015-5736 disclosed?

CVE-2015-5736 was first published in the National Vulnerability Database on September 3, 2015, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2015-5736 actively exploited?

CVE-2015-5736 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2015-5736?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2015-5736, 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-2015-5736

📅 Published

🔄 Last Modified

🔗 References (20)