How severe is CVE-2015-5737?

CVE-2015-5737 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-2015-5737 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-5737?

CVE-2015-5737 affects Fortinet Forticlient. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-5737?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-5737 published?

CVE-2015-5737 was published on 2015-09-03 and last updated on 2026-06-17.

CVE-2015-5737

CVE-2015-5737 is a high-severity vulnerability in Fortinet Forticlient with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Fortinet Forticlient
Published: 2015-09-03
Last modified: 2026-06-17

Description

The (1) mdare64_48.sys, (2) mdare32_48.sys, (3) mdare32_52.sys, (4) mdare64_52.sys, and (5) Fortishield.sys drivers in Fortinet FortiClient before 5.2.4 do not properly restrict access to the API for management of processes and the Windows registry, which allows local users to obtain a privileged handle to a PID and possibly have unspecified other impact, as demonstrated by a 0x2220c8 ioctl call.

Frequently asked questions

What is CVE-2015-5737?: The (1) mdare64_48.sys, (2) mdare32_48.sys, (3) mdare32_52.sys, (4) mdare64_52.sys, and (5) Fortishield.sys drivers in Fortinet FortiClient before 5.2.4 do not properly restrict access to the API for management of processes and the Windows registry, which allows local users to obtain a privileged handle to a PID and possibly have unspecified other impact, as demonstrated by a 0x2220c8 ioctl call.
How severe is CVE-2015-5737?: CVE-2015-5737 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-2015-5737 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-5737?: CVE-2015-5737 affects Fortinet Forticlient. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-5737?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-5737 published?: CVE-2015-5737 was published on 2015-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fortinet:forticlient:*:*:*:*:*:*:*:*

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