How severe is CVE-2026-25972?

CVE-2026-25972 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-25972 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25972?

CVE-2026-25972 primarily affects Fortinet Fortisiem. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-25972?

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

Does CVE-2026-25972 have an EU (EUVD) identifier?

Yes. CVE-2026-25972 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10533.

When was CVE-2026-25972 published?

CVE-2026-25972 was published on 2026-03-10 and last updated on 2026-06-17.

CVE-2026-25972

CVE-2026-25972 is a medium-severity vulnerability in Fortinet Fortisiem with a CVSS 3.x base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10533
Weakness: CWE-79
Affected product: Fortinet Fortisiem
Published: 2026-03-10
Last modified: 2026-06-17

Description

An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4 may allow a remote unauthenticated attacker to provide arbitrary data enabling a social engineering attack via spoofed URL parameters.

Frequently asked questions

What is CVE-2026-25972?: An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4 may allow a remote unauthenticated attacker to provide arbitrary data enabling a social engineering attack via spoofed URL parameters.
How severe is CVE-2026-25972?: CVE-2026-25972 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-25972 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25972?: CVE-2026-25972 primarily affects Fortinet Fortisiem. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-25972?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25972 have an EU (EUVD) identifier?: Yes. CVE-2026-25972 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10533.
When was CVE-2026-25972 published?: CVE-2026-25972 was published on 2026-03-10 and last updated on 2026-06-17.

References

https://fortiguard.fortinet.com/psirt/FG-IR-26-077

Affected products (2)

cpe:2.3:a:fortinet:fortisiem:*:*:*:*:*:*:*:*
cpe:2.3:a:fortinet:fortisiem:7.4.0:*:*:*:*:*:*:*

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