SARA / Free Tools / CVE / CVE-2022-42475

CVE-2022-42475 — Fortinet FortiOS Heap-Based Buffer Overflow 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 attack

CVSS
9.3 CRITICAL
EPSS
93.98% (top 0.10%)
CWE
CWE-197
Published
2023-01-02T08:18:49.444Z
Last modified
2025-10-21T23:15:29.105Z
CVSS vector
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
CISA KEV — Actively Exploited
Added to KEV
2022-12-13
BOD 22-01 due
2023-01-03
Ransomware use
Known

01What is 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.

02Affected products

VendorProductVersions
FortinetFortiProxy7.2.0, 7.0.0, 2.0.0, 1.2.0, 1.1.0, 1.0.0
FortinetFortiOS7.2.0, 7.0.0, 6.4.0, 6.2.0, 6.0.0, 5.6.0, 5.4.0, 5.2.0, 5.0.0

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-12-13. Ransomware use: Known.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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