CVE-2021-26098

CVE-2021-26098 is a medium-severity vulnerability in Fortinet Fortisandbox 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-330.

Key facts

Description

An instance of small space of random values in the RPC API of FortiSandbox before 4.0.0 may allow an attacker in possession of a few information pieces about the state of the device to possibly predict valid session IDs.

Frequently asked questions

What is CVE-2021-26098?
An instance of small space of random values in the RPC API of FortiSandbox before 4.0.0 may allow an attacker in possession of a few information pieces about the state of the device to possibly predict valid session IDs.
How severe is CVE-2021-26098?
CVE-2021-26098 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-26098 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26098?
CVE-2021-26098 affects Fortinet Fortisandbox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-26098?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26098 published?
CVE-2021-26098 was published on 2021-08-04 and last updated on 2026-06-17.

References

Affected products (1)

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