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CVE-2025-25249

CRITICALCVSS 9.8/10EPSS 0.75%

Last modified

CVE-2025-25249 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.75%

50.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FortinetFortios>= 6.4.0, < 6.4.17
FortinetFortios>= 7.0.0, < 7.0.18
FortinetFortios>= 7.2.0, < 7.2.12
FortinetFortios>= 7.4.0, < 7.4.9
FortinetFortios>= 7.6.0, < 7.6.4
FortinetFortiswitchmanager>= 7.0.0, < 7.0.6
FortinetFortiswitchmanager>= 7.2.0, < 7.2.7
FortinetFortisase25.1.39
FortinetFortisase25.1.51

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2025-25249?
A heap-based buffer overflow vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiOS 6.4 all versions, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows attacker to execute unauthorized code or commands via specially crafted packets
How severe is CVE-2025-25249?
CVE-2025-25249 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.
How do I fix CVE-2025-25249?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-25249?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST