CVE-2021-24018: Buffer Underwrite in firmware verification
A buffer underwrite (CWE-124) vulnerability in the firmware verification routine of FortiWeb, FortiOS, FortiSwitch, FortiADC, FortiAI, FortiManager, FortiAnalyzer, FortiProxy may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image.
Other sources
A buffer underwrite vulnerability in the firmware verification routine of FortiOS before 7.0.1 may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-24018?
CVE-2021-24018 is a buffer underwrite vulnerability in the firmware verification routine of FortiOS before 7.0.1.
What is the severity of CVE-2021-24018?
CVE-2021-24018 has a severity score of 8.8 (high).
How does CVE-2021-24018 impact Fortinet FortiOS?
CVE-2021-24018 may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image.
Which versions of Fortinet FortiOS are affected by CVE-2021-24018?
Fortinet FortiOS versions up to 6.2.10, versions 6.4.0 to 6.4.7, and version 7.0.0 are affected by CVE-2021-24018.
How can I fix CVE-2021-24018?
To fix CVE-2021-24018, it is recommended to update Fortinet FortiOS to version 7.0.1 or later.