CVE-2022-42475A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN…
Updated under an hour ago ()
Does this affect you?
It affects Fortinet FortiProxy and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Dec 13, 2022; federal agencies had to remediate by Jan 3, 2023, and it is known to be used in ransomware. Treat that date as your deadline.
Do this next
Free account, 1 product
A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN 7.2.0 through 7.2.2, 7.0.0 through 7.0.8, 6.4.0 through 6.4.10, 6.2.0 through 6.2.11, 6.0.15 and earlier and FortiProxy SSL-VPN 7.2.0 through 7.2.1, 7.0.7 and earlier may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.
- CVSS
- 9.3 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C
- Weakness (CWE)
- CWE-197
- Known exploited
- Added to CISA KEV Dec 13, 2022; federal remediation due Jan 3, 2023; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 99.47% (percentile 100)
- Assigned by
- fortinet
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Fortinet FortiProxy fortinet:fortiproxy (from the name) | from 7.2.0 through 7.2.1; from 7.0.0 through 7.0.7; from 2.0.0 through 2.0.11; from 1.2.0 through 1.2.13; from 1.1.0 through 1.1.6; from 1.0.0 through 1.0.7 | CNA record |
Fortinet FortiOS fortinet:fortios (from the name) | from 7.2.0 through 7.2.2; from 7.0.0 through 7.0.8; from 6.4.0 through 6.4.10; from 6.2.0 through 6.2.11; from 6.0.0 through 6.0.15; from 5.6.0 through 5.6.14; from 5.4.0 through 5.4.13; from 5.2.0 through 5.2.15; and 1 more ranges | CNA record |
fortinet fortios fortinet:fortios | from 5.0.0 through 5.0.14; from 5.2.0 through 5.2.15; from 5.4.0 through 5.4.13; from 5.6.0 through 5.6.14; from 6.0.0 before 6.0.16; from 6.2.0 before 6.2.12; from 6.4.0 before 6.4.11; from 7.0.0 before 7.0.9; and 5 more ranges | NVD |
fortinet fortiproxy fortinet:fortiproxy | from 1.0.0 through 1.0.7; from 1.1.0 through 1.1.6; from 1.2.0 through 1.2.13; from 2.0.0 before 2.0.12; from 7.0.0 before 7.0.8; from 7.2.0 before 7.2.2 | NVD |
References
- https://fortiguard.com/psirt/FG-IR-22-398exploit, mitigation, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42475us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.