Buffer overflow in Fortinet Fortimail
CVE-2023-33302
A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (29.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Fortinet Fortimail — versions 6.4.0, 6.2.0, 6.0.0
- Fortinet Fortindr — versions 7.2.0, 7.1.0, 7.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- psirt@fortinet.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-33302?
- CVE-2023-33302 is a medium-severity vulnerability in Fortinet Fortimail, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 4.7/10. Published 2025-03-31.
- How severe is CVE-2023-33302?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2023-33302 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.