Buffer overflow in Fortinet Fortios
CVE-2023-27997
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS version 7.2.4 and below, version 7.0.11 and below, version 6.4.12 and below, version 6.0.16 and below and FortiProxy version 7.2.3 and below, version 7.0.9 and below, version…
Vulnerability class: Buffer Overflow
EPSS: 0.921 (99.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.2 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:X/RC:R.
Affected products
- Fortinet Fortios — versions 7.2.0, 7.0.0, 6.4.0
- Fortinet Fortios-6k7k — versions 7.0.10, 7.0.5, 6.4.12
- Fortinet Fortiproxy — versions 7.2.0, 7.0.0, 2.0.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2023-27997?
- CVE-2023-27997 is a critical-severity vulnerability in Fortinet Fortios, classified under Heap-based Buffer Overflow. CVSS score: 9.2/10. Published 2023-06-13.
- How severe is CVE-2023-27997?
- Critical severity. CVSS v3 base score is 9.2 out of 10.
- Is CVE-2023-27997 known to be exploited?
- Yes. CVE-2023-27997 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-06-13), indicating it is being actively exploited. 43 public proof-of-concept repositories are indexed.