CVE-2025-48839

Name: CVE-2025-48839
Creator: NVD / NIST
Published: 2025-11-18T17:16:02.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2025-48839 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. 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.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.6/10

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

EPSS Probability

0.32%

23.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Fortinet	Fortiadc	>= 6.2.0, < 7.4.8
Fortinet	Fortiadc	>= 7.6.0, < 7.6.3
Fortinet	Fortiadc	8.0.0

References

https://fortiguard.fortinet.com/psirt/FG-IR-25-225Vendor Advisory

Timeline

Published: Nov 18, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-48839?

How severe is CVE-2025-48839?

CVE-2025-48839 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2025-48839?

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-2025-48839?

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

Scan your code now

Source: NVD / NIST