CVE-2022-42475 on CISA KEV

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 attack

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• fortiguard.com — https://fortiguard.com/psirt/FG-IR-22-398

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
Fortinet	FortiProxy	7.2.0, 7.0.0, 2.0.0, 1.2.0, 1.1.0, 1.0.0
Fortinet	FortiOS	7.2.0, 7.0.0, 6.4.0, 6.2.0, 6.0.0, 5.6.0, 5.4.0, 5.2.0, 5.0.0

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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