Long lived sessions in Fortinet FortiGate devices with FortiOS 5.x before 5.4.0 could violate a security policy during IPS signature updates when the FortiGate's IPSengine is configured in flow mode. All FortiGate versions with IPS configured in proxy mode (the default mode) are not affected.
CVE-2016-7541
MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence
Score 5.9 from GitHub Security Advisory published 2022-05-17. NVD baseline CVSS 5.9; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.9Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.9
- EG Score
- 5.9(medium)
- EPSS
- 57.0%
- KEV
- Not listed
Published
March 30, 2017
Last Modified
May 13, 2026
References (4)
- psirt@fortinethttp://fortiguard.com/advisory/FG-IR-16-088
- psirt@fortinethttp://www.securityfocus.com/bid/94477
- af854a3a-2127-422b-91ae-364da2661108http://fortiguard.com/advisory/FG-IR-16-088
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/94477
Frequently asked(5)
What is CVE-2016-7541?
CVE-2016-7541 is a medium vulnerability published on March 30, 2017. Long lived sessions in Fortinet FortiGate devices with FortiOS 5.x before 5.4.0 could violate a security policy during IPS signature updates when the FortiGate's IPSengine is configured in flow mode. All FortiGate versions with IPS configured in proxy mode (the default mode) are not affected.
When was CVE-2016-7541 disclosed?
CVE-2016-7541 was first published in the National Vulnerability Database on March 30, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-7541 actively exploited?
CVE-2016-7541 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2016-7541?
CVE-2016-7541 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2016-7541?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-7541, 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-2016-7541
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