High severity · published Dec 8, 2021
CVE-2021-41027
A stack-based buffer overflow in Fortinet FortiWeb version 6.4.1 and 6.4.0, allows an authenticated attacker to execute unauthorized code or commands via crafted certificates…
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
A stack-based buffer overflow in Fortinet FortiWeb version 6.4.1 and 6.4.0, allows an authenticated attacker to execute unauthorized code or commands via crafted certificates loaded into the device.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Fortiweb · Fortinet
6.4.0; 6.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41027
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-41027
Patch
https://fortiguard.com/advisory/FG-IR-21-134
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