CVEs / CVE-2022-42475
CVE-2022-42475: Fortinet FortiOS Heap-Based Buffer Overflow Vulnerability
- Known exploited in the CISA KEV catalog since 13 Dec 2022
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 99.4% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
Multiple versions of Fortinet FortiOS SSL-VPN contain a heap-based buffer overflow vulnerability which can allow an unauthenticated, remote attacker to execute arbitrary code or commands via specifically crafted requests.
Description
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Fortinet FortiProxy | from 7.2.0, up to and including 7.2.1 | — |
| Fortinet FortiProxy | from 7.0.0, up to and including 7.0.7 | — |
| Fortinet FortiProxy | from 2.0.0, up to and including 2.0.11 | — |
| Fortinet FortiProxy | from 1.2.0, up to and including 1.2.13 | — |
| Fortinet FortiProxy | from 1.1.0, up to and including 1.1.6 | — |
| Fortinet FortiProxy | from 1.0.0, up to and including 1.0.7 | — |
| Fortinet FortiOS | from 7.2.0, up to and including 7.2.2 | — |
| Fortinet FortiOS | from 7.0.0, up to and including 7.0.8 | — |
| Fortinet FortiOS | from 6.4.0, up to and including 6.4.10 | — |
| Fortinet FortiOS | from 6.2.0, up to and including 6.2.11 | — |
| Fortinet FortiOS | from 6.0.0, up to and including 6.0.15 | — |
| Fortinet FortiOS | from 5.6.0, up to and including 5.6.14 | — |
| Fortinet FortiOS | from 5.4.0, up to and including 5.4.13 | — |
| Fortinet FortiOS | from 5.2.0, up to and including 5.2.15 | — |
| Fortinet FortiOS | from 5.0.0, up to and including 5.0.14 | — |
Exploitation
| In CISA KEV since | 13 Dec 2022 |
|---|---|
| Due date for US federal agencies | 3 Jan 2023 |
| Used in ransomware campaigns | Known |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-197, CWE-787 |
References
- CVE-2022-42475 on NVD
- CVE-2022-42475 in the CISA KEV catalog
- https://www.fortiguard.com/psirt/FG-IR-22-398 (cited by CISA)
- https://fortiguard.com/psirt/FG-IR-22-398 Exploit, Mitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-42475 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.