FG-IR-26-121: Heap-based buffer overflow in oftpd daemon

Published Apr 14, 2026
·
Updated

A heap-based buffer overflow vulnerability [CWE-122] in FortiAnalyzer Cloud oftpd daemon may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. Successful exploitation would require a large amount of effort in preparation because of ASLR and network segmentation

Affected Software

2 affected componentsFixes available
Fortinet FortiAnalyzer Cloud>=7.6.2<=7.6.4
Fortinet FortiManager Cloud>=7.6.2<=7.6.4

Event History

Apr 14, 2026
Advisory Published
via FortiGuard·12:00 AM
Data Sourced
via FortiGuard·12:00 AM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of FG-IR-26-121?

FG-IR-26-121 has a high severity level due to its potential to allow remote code execution.

2

How do I fix FG-IR-26-121?

To fix FG-IR-26-121, upgrade to FortiAnalyzer Cloud and FortiManager Cloud version 7.6.5 or later.

3

Who is affected by FG-IR-26-121?

FG-IR-26-121 affects users running FortiAnalyzer Cloud and FortiManager Cloud versions 7.6.2 to 7.6.4.

4

What kind of attack does FG-IR-26-121 allow?

FG-IR-26-121 allows a remote unauthenticated attacker to execute arbitrary code or commands.

5

What is the nature of the vulnerability in FG-IR-26-121?

FG-IR-26-121 is a heap-based buffer overflow vulnerability identified in the oftpd daemon.

Contact

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FG-IR-26-121 - Heap-based buffer overflow in oftpd daemon - SecAlerts