CVE-2020-12820
Published: 19 December 2024
Summary
CVE-2020-12820 is a medium-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Fortinet Fortios. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 11.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-5103
Vulnerability details
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…
more
requesting a large FortiClient file name. We are not aware of proof of concept code successfully achieving the latter.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.