How severe is CVE-2021-41013?

CVE-2021-41013 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2021-41013 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41013?

CVE-2021-41013 primarily affects Fortinet Fortiweb. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-41013?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-41013 published?

CVE-2021-41013 was published on 2021-12-08 and last updated on 2026-06-17.

CVE-2021-41013

CVE-2021-41013 is a medium-severity vulnerability in Fortinet Fortiweb with a CVSS 3.x base score of 5.3. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Fortinet Fortiweb
Published: 2021-12-08
Last modified: 2026-06-17

Description

An improper access control vulnerability [CWE-284] in FortiWeb versions 6.4.1 and below and 6.3.15 and below in the Report Browse section of Log & Report may allow an unauthorized and unauthenticated user to access the Log reports via their URLs.

Frequently asked questions

What is CVE-2021-41013?: An improper access control vulnerability [CWE-284] in FortiWeb versions 6.4.1 and below and 6.3.15 and below in the Report Browse section of Log & Report may allow an unauthorized and unauthenticated user to access the Log reports via their URLs.
How severe is CVE-2021-41013?: CVE-2021-41013 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2021-41013 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41013?: CVE-2021-41013 primarily affects Fortinet Fortiweb. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-41013?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41013 published?: CVE-2021-41013 was published on 2021-12-08 and last updated on 2026-06-17.

References

https://fortiguard.com/advisory/FG-IR-21-138

Affected products (3)

cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiweb:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortiweb:6.4.1:*:*:*:*:*:*:*

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