CVE-2024-21762
Fortinet FortiOS: Out-of-Bound Write
As of , CVE-2024-21762 in Fortinet FortiOS is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 9 February 2024
- US federal deadline
- 16 February 20247 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- KnownCISA changed it from Unknown to Known on 9 June 2025.
- EPSS score
- 0.83Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- No score that dayThe EPSS file of the day CISA listed it has no score for it.
- Public exploit
- None foundNeither Metasploit nor Exploit-DB lists one.
- Fix
- Vendor advice: fortiguard.fortinet.comLinks below, from CISA's entry.
What CISA says to do
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA's required action
What the flaw is
Fortinet FortiOS contains an out-of-bound write vulnerability that allows a remote unauthenticated attacker to execute code or commands via specially crafted HTTP requests.
CISA's description
A out-of-bounds write in Fortinet FortiOS versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.6, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7 allows attacker to execute unauthorized code or commands via specifically crafted requests
The CVE record's description, from fortinet
- CVE published
- 9 February 2024
- Assigned by
- fortinet
- CVSS
- 9.6 Critical (CVSS 3.1, from the CNA)
- CWE-787
- Out-of-bounds Write
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- yes
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
- CISA changed its entry. Ransomware use: Unknown to Known.
FortiOS: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2018-13379SSL VPN Path Traversal | Fortinet FortiOS | Patch this weekRansomware use; Metasploit module; EPSS 0.99 | 0.99 | ||
| CVE-2022-42475Heap-Based Buffer Overflow | Fortinet FortiOS | Patch this weekRansomware use; EPSS 0.99 | 0.99 | ||
| CVE-2020-12812SSL VPN Improper Authentication | Fortinet FortiOS | Patch this weekRansomware use | 0.45 | ||
| CVE-2019-5591Default Configuration | Fortinet FortiOS | Patch this weekRansomware use | 0.18 | ||
| CVE-2019-6693Use of Hard-Coded Credentials | Fortinet FortiOS | Patch this weekRansomware use | 0.06 | ||
| CVE-2025-68686Exposure of Sensitive Information to an Unauthorized Actor | Fortinet FortiOS | Patch soon | 0.30 | ||
| CVE-2022-41328Path Traversal | Fortinet FortiOS | Patch soon | 0.11 | ||
| CVE-2021-44168Arbitrary File Download | Fortinet FortiOS | Patch soon | 0.01 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org