CVE-2025-43892: fortios — Fix

Description

A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request.

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CVSS v3.1 Score

4.3

MEDIUM

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

EPSS — Exploit Prediction

0.0032

Probability of exploitation

0.24%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-126 CWE-126

Affected Products

Vendor	Product	Versions
fortinet	fortiproxy	7.2.0 — 7.2.15
fortinet	fortiproxy	7.4.0 — 7.4.13
fortinet	fortiproxy	7.6.0 — 7.6.5
fortinet	fortios	7.2.0 — 7.2.13
fortinet	fortios	7.4.0 — 7.4.8
fortinet	fortios	7.6.0 — 7.6.2

References

Advisories & Patches

https://fortiguard.fortinet.com/psirt/#5944

Frequently Asked Questions

What is CVE-2025-43892? +

A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2 all versions, FortiOS 7.0 all versions, FortiOS 6.4 all versions may allow an authenticated remote attacker to return a portion of device memory in the redirect response via submitting a specially crafted request. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-43892? +

CVE-2025-43892 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0032, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2025-43892? +

CVE-2025-43892 affects products from fortinet, specifically: fortios, fortiproxy. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43892? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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