Buffer overflow in Fortinet Fortios
CVE-2023-42789
A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.1, FortiOS 7.2.0 through 7.2.5, FortiOS 7.0.0 through 7.0.12, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiProxy 7.4.0, FortiProxy 7.2.0 through 7.2.6, FortiProxy 7.0.0 through 7.0.12, FortiProxy 2.0.0 through 2.0.13, FortiSASE 23.2.b allows attacker to execute unauthorized code or commands via specially crafted HTTP requests.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Fortinet Fortios — versions 7.4.1, 6.4.0, 7.0.0
- Fortinet Fortipam — versions 1.1.0, 1.0.0
- Fortinet Fortiproxy — versions 7.4.0, 7.2.0, 7.0.0
- Fortinet Fortisase — versions 23.2.b
Weakness classification (CWE)
Public proof-of-concept exploits
References
- fortiguard.com/psirt/FG-IR-23-328 (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-42789?
- CVE-2023-42789 is a critical-severity vulnerability in Fortinet Fortios, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-03-12.
- How severe is CVE-2023-42789?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-42789 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.