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Medium severity · published Nov 18, 2025
CVE-2025-48839
An Out-of-bounds Write vulnerability [CWE-787] in FortiADC 8.0.0, 7.6.0 through 7.6.2, 7.4.0 through 7.4.7, 7.2 all versions, 7.1 all versions, 7.0 all versions, 6.2 all versions…
6.6
CVSS
0.4%
EPSS
No
On KEV
Description
An Out-of-bounds Write vulnerability [CWE-787] in FortiADC 8.0.0, 7.6.0 through 7.6.2, 7.4.0 through 7.4.7, 7.2 all versions, 7.1 all versions, 7.0 all versions, 6.2 all versions may allow an authenticated attacker to execute arbitrary code via specially crafted HTTP requests.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortiadc · Fortinet
6.2.0 before 7.4.8; 7.6.0 before 7.6.3; 8.0.0 · source: NVD
Affected product
FO
Fortiadc
Fortinet
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-48839
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-48839
Vendor Advisory
https://fortiguard.fortinet.com/psirt/FG-IR-25-225
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