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Known exploited vulnerability

CVE-2022-42475

criticalCVSS 3.1 9.8In CISA KEVRansomwareEPSS 99%Published · Fortinet

The short answer

CVE-2022-42475 affects Fortinet FortiProxy and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-12-13: attackers are using it, so patch it first.

What it is

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.

Weakness: CWE-197, CWE-787.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Dec 13, 2022

Federal due date Jan 3, 2023

EPSS, next 30 days

99%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

FortiProxy, FortiOS. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2022-42475 being exploited?

Yes. CISA added CVE-2022-42475 to its Known Exploited Vulnerabilities catalog on 2022-12-13, with a federal remediation due date of 2023-01-03. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2022-42475?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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