How severe is CVE-2024-23113?

CVE-2024-23113 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which products are affected by CVE-2024-23113?

CVE-2024-23113 affects the following products: fortinet fortios, fortinet fortipam, fortinet fortiproxy, fortinet fortiswitchmanager.

How do I patch CVE-2024-23113?

No patch has shipped for CVE-2024-23113 yet — track the fortinet fortios advisory for a fixed release and apply the workarounds below in the meantime.

How do I detect CVE-2024-23113 across my infrastructure?

Inventory every fortinet fortios deployment and check each version against the affected-products list above.

How do I mitigate CVE-2024-23113 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.

Is CVE-2024-23113 actively exploited in the wild?

Yes. There are 10 known exploit references for CVE-2024-23113, including 9 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2024-23113?

CVE-2024-23113 has an EPSS (Exploit Prediction Scoring System) score of 61.7%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2024-23113 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2024-23113 (Fortinet Multiple Products Format String Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2024-10-09. CISA required all US federal civilian agencies to remediate this vulnerability by 2024-10-30. The required action was: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2024-23113?

CVE-2024-23113 is classified as CWE-134 (CWE-134). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2024-23113?

CVE-2024-23113 affects fortinet fortios; fortinet fortipam; fortinet fortiproxy; fortinet fortiswitchmanager. Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2024-23113 published, and has it been updated?

CVE-2024-23113 was published on February 15, 2024 and was last updated on October 21, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🛡️

CISA KEV · ACTIVELY EXPLOITED

CRITICAL severity

CVE-2024-23113 — Fortios

CRITICAL

CVE-2024-23113 is a critical-severity (CVSS 9.8) CWE-134 vulnerability in fortinet fortios. It is in CISA's Known Exploited Vulnerabilities catalog (added 2024-10-09) — treat it as actively exploited and patch now. No vendor fix is recorded yet; mitigation options are listed below.

A use of externally-controlled format string 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, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0…

Published

Feb 15, 2024

Updated

Oct 21, 2025

Affected

4 products

Patched

See advisory

Exploits

10 known

Exploitation data as of Oct 24, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2024-10-09. Federal agencies were required to remediate by 2024-10-30.
CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
A successful exploit gives an attacker total control of the affected component, not partial access.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2024-23113.

EPSS Exploitation Probability

via FIRST.org ↗

61.7%probability of exploitation in next 30 days

High Risk0.00%

Lower risk than most CVEs99th percentile — riskier than 99% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2024-23113 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 395,249 CVEs with a current EPSS score, this one falls in the 50–90% band (highlighted). Counts from FIRST.org, log-scaled.

Description

A use of externally-controlled format string 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, FortiProxy versions 7.4.0 through 7.4.2, 7.2.0 through 7.2.8, 7.0.0 through 7.0.14, FortiPAM versions 1.2.0, 1.1.0 through 1.1.2, 1.0.0 through 1.0.3, FortiSwitchManager versions 7.2.0 through 7.2.3, 7.0.0 through 7.0.3 allows attacker to execute unauthorized code or commands via specially crafted packets.

Affected Products

4 products · 11 configurations

Application

fortiosfortinet

all

fortipamfortinet

all

Application

fortiproxyfortinet

all

Application

fortiswitchmanagerfortinet

all

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.