Known exploited vulnerability
CVE-2024-21762
The short answer
CVE-2024-21762 affects Fortinet FortiOS and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-02-09: attackers are using it, so patch it first.
What it is
A out-of-bounds write vulnerability in Fortinet FortiOS 7.4.0 through 7.4.2, FortiOS 7.2.0 through 7.2.6, FortiOS 7.0.0 through 7.0.13, FortiOS 6.4.0 through 6.4.14, FortiOS 6.2.0 through 6.2.15, FortiOS 6.0 all versions, FortiProxy 7.4.0 through 7.4.2, FortiProxy 7.2.0 through 7.2.8, FortiProxy 7.0.0 through 7.0.14, FortiProxy 2.0.0 through 2.0.13, FortiProxy 01.02 all versions, FortiProxy 1.2 all versions, FortiProxy 01.01 all versions, FortiProxy 1.1 all versions, FortiProxy 01.00 all versions allows attacker to execute unauthorized code or commands via specifically crafted requests
Weakness: 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 Feb 9, 2024
Federal due date Feb 16, 2024
EPSS, next 30 days
85%
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 mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Affected products
FortiOS, FortiProxy, fortiproxy, fortios. NVD's record lists the exact affected versions.
References
- fortiguard.com/psirt/FG-IR-24-015 Vendor Advisory
- fortiguard.com/psirt/FG-IR-24-015 Vendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21762 US Government Resource
Questions
Is CVE-2024-21762 being exploited?
Yes. CISA added CVE-2024-21762 to its Known Exploited Vulnerabilities catalog on 2024-02-09, with a federal remediation due date of 2024-02-16. CISA lists it as used in ransomware campaigns.
How do I fix CVE-2024-21762?
CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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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