CVE-2020-12820CWE-121

Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker…

Medium · published December 19, 2024

CVSS v3.1
5.4
EPSS
1%
Percentile
58.9
In the wild
Unconfirmed
What it is

Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker authenticated to the SSL VPN to crash the FortiClient NAC daemon (fcnacd) and potentially execute arbitrary code via requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:X/RC:X
CVSS v4.0
Not supplied
EPSS
0.00887 · 58.9th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2024-12-19T10:57Z
EPSS history
Timeline
  • 19 DEC 10:57Z
    Under non-default configuration, a stack-based buffer overflow in FortiOS version 6.0.10 and below, version 5.6.12 and below may allow a remote attacker…
    cvelistv5