Advisory severityHigh7.0Fortinet

High [CVE-2025-54820] Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager…

This high-severity Fortinet advisory covers CVE-2025-54820; related products: FortiManager.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2025-54820 Source published Mar 10, 2026Source updated Jun 17, 2026

VulniPulse record published Mar 10, 2026Record updated Jun 17, 2026

CVE-2025-54820

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Summary

A Stack-based Buffer Overflow vulnerability [CWE-121] vulnerability in Fortinet FortiManager 7.4.0 through 7.4.2, FortiManager 7.2.0 through 7.2.10, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to execute unauthorized commands via crafted requests, if the service is enabled.

The success of the attack depends on the ability to bypass the stack protection mechanisms.

Affected versions

FortiManager 7.4: 7.4.0 through 7.4.2
FortiManager 7.2: 7.2.0 through 7.2.10
FortiManager 6.4: 6.4 all versions

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions

FortiManager 7.4: 7.4.3
FortiManager 7.2: 7.2.11
FortiManager 6.4: migrate to a fixed release

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Upgrade per the Affected/Solution table: FortiManager 7.4: 7.4.3; FortiManager 7.2: 7.2.11; FortiManager 6.4: migrate to a fixed release.

Temporary workarounds

config system interfaceedit <portID>set serviceaccess <service>end
Where <service> is not "fgtupdates".
https://docs.fortinet.com/document/fortimanager/7.4.2/administration-guide/581288/configure-a-fortimanager-without-internet-connectivity-to-access-a-local-fortimanager-as-fds

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

FortiGuard PSIRT Advisoriesofficial
Official vendor feed — the source of truth for this advisory. VulniPulse polled this feed and parsed this entry from it. Discovered from the machine-readable feed https://filestore.fortinet.com/fortiguard/rss/ir.xml; this link opens the Fortinet advisory index instead of the raw feed document.
Fortinet
Vendor advisory pageofficial
Advisory page fetched and parsed to extract affected/fixed versions and mitigation guidance beyond what the feed carries.
Fortinet

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2025-54820NVD CVE.org MITRE

Official resources

FortiManager documentation & upgrade guides
Official documentation
This advisory names 7.4 / 7.2 / 6.4 as the first fixed releases — official upgrade documentation for FortiManager.

Discussion(0)

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