Exploited vulnerability · CISA KEV

Is CVE-2024-23113 exploited? Yes: in CISA KEV since 9 Oct 2024

Gociux · Fortinet Multiple Products · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2024-23113, Fortinet Multiple Products Format String Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 9 Oct 2024, 237 days after it was published. It affects Fortinet Multiple Products, an internet-facing product of the kind attackers use for initial access. If you run it, CISA's required action is: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

exploitedYesCISA KEV · 9 Oct 2024

ransomwareNot knownno confirmed use

EPSStop 1%among the most likely CVEs to be exploited

severity9.8CVSS 3.1 · critical

US federal due30 Oct 2024BOD 22-01 deadline

What it is

Fortinet FortiOS, FortiPAM, FortiProxy, and FortiWeb contain a format string vulnerability that allows a remote, unauthenticated attacker to execute arbitrary code or commands via specially crafted requests.

Vendor	Fortinet (32 exploited CVEs in KEV)
Product	Multiple Products
Vulnerability	Fortinet Multiple Products Format String Vulnerability
Weakness	CWE-134
Published	15 Feb 2024
Added to KEV	9 Oct 2024
Reported by (CNA)	fortinet

What to do

Check whether you run it. Look for Multiple Products in your asset inventory, including appliances and cloud images. Stack check lists every exploited Fortinet CVE at once.
Apply the fix. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 15 Feb 2024.
Get told next time. Email alerts when CISA adds a CVE for Fortinet.

Other exploited CVEs in Multiple Products

CVE-2025-61624: Fortinet Multiple Products Path Traversal Vulnerability (16 Oct 2026)
CVE-2025-25249: Fortinet Multiple Products Heap-based Buffer Overflow Vulnerability (9 Sep 2026)
CVE-2026-24858: Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel Vulnerability (27 Jan 2026)
CVE-2025-59718: Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability (16 Dec 2025)
CVE-2025-32756: Fortinet Multiple Products Stack-Based Buffer Overflow Vulnerability (14 May 2025)
CVE-2022-40684: Fortinet Multiple Products Authentication Bypass Vulnerability (11 Oct 2022)

References

Questions

Is CVE-2024-23113 being exploited?

Yes. CISA added CVE-2024-23113 to the Known Exploited Vulnerabilities catalog on 9 Oct 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2024-23113 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2024-23113?

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check Fortinet's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Multiple Products and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in October 2024 · Fortinet scorecard · act-now radar.

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