What is CVE-2024-23113?

CVE-2024-23113 is Fortinet Multiple Products Format String Vulnerability. The supplied enrichment data classifies it as Unclassified mapped to CWE-134 CWE-134.

Which versions are affected?

Affected product and version evidence is listed in the product table above. Current public advisories should be checked for exact version scope before patch targeting is finalized.

Is there active exploitation?

Yes: CISA KEV signal present. If exploitation is not confirmed from current sources, teams should document that status and continue monitoring KEV, vendor, and telemetry updates.

Is there a public exploit?

1 public PoC repositories reported; 0 marked weaponized in current dataset. Public exploit or PoC availability should raise triage priority, especially for exposed or business-critical systems.

How can defenders detect it?

Start with web/proxy/WAF logs, application logs, network IDS/IPS where available. Look for vulnerability-class behavior, product errors, suspicious authentication events, exploit probes, and abnormal process activity based only on evidence that applies to the affected product.

How should teams prioritize it?

Prioritize CVE-2024-23113 using CVSS 9.8, EPSS 62%, KEV status, public PoC status, and asset exposure. Internet-facing, privileged, or business-critical deployments should be handled first.

Are workarounds available?

Workarounds are not confirmed from current sources. Fixed-version evidence is listed in the mitigation section above.

Which threat actors are linked publicly?

No public threat actor linkage is confirmed from current sources. Do not attribute exploitation to a threat actor unless the source evidence explicitly supports that linkage.

What should be done in the next 24 hours?

Identify exposed assets running affected vendor/product/version combinations. Treat as emergency remediation because CISA KEV status is present. Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class. Open remediation tickets with affected assets, owners, evidence status, and detection coverage so decisions are traceable.

CISA KEVcriticalpublic exploit

CVE-2024-23113

CVE-2024-23113 — Fortinet Multiple Products Format String Vulnerability

Q: Is it in CISA KEV?

Yes. The supplied enrichment data lists CVE-2024-23113 in CISA KEV with required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.. KEV status should be monitored because it can change after initial disclosure or after exploitation becomes publicly confirmed.

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.

Published Feb 15, 2024Updated Jun 17, 2026Sources: NVD, Fortinet (CNA), CISA, FIRST EPSS

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Confirmed

CISA KEV, listed Oct 9, 2024

EPSS

62%

ahead of 99.1% of scored CVEs

Affects

Fortinet

11 products listed

CVSS base

9.8

critical · 2 sources

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

Active

none · proof-of-concept · active

Automatable

Yes

can an attacker script all four kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

The vendor's own words where we have them.

Please upgrade to FortiWeb version 7.4.3 or above Please upgrade to FortiVoice version 7.0.2 or above Please upgrade to FortiVoice version 6.4.9 or above Please upgrade to FortiSwitchManager version 7.2.4 or above Please upgrade to FortiSwitchManager version 7.0.4 or above Please upgrade to FortiOS version 7.4.3 or above Please upgrade to FortiOS version 7.2.7 or above Please upgrade to FortiOS version 7.0.14 or above Please upgrade to FortiAuthenticator version 7.0.0 or above Please upgrade to FortiPAM version 1.2.1 or above Please upgrade to FortiPAM version 1.1.3 or above Please upgrade to…

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Federal deadline Oct 30, 2024 — passed 688 days ago

First 24 hours

Ordered from the record's own fields — exposure first, because you cannot patch what you have not found.

Identify exposed assets running affected vendor/product/version combinations.
Treat as emergency remediation because CISA KEV status is present.
Search available logs for exploit probes, errors, authentication anomalies, or suspicious child processes matching the vulnerability class.

Affected scope

Vendor, product and version as the advisories word them.

Vendor	Product	Versions	Status
Fortinet	FortiSwitchManager	7.2.0 to <= 7.2.3	Vulnerable
Fortinet	FortiSwitchManager	7.0.0 to <= 7.0.3	Vulnerable
Fortinet	FortiOS	7.4.0 to <= 7.4.2	Vulnerable
Fortinet	FortiOS	7.2.0 to <= 7.2.6	Vulnerable
Fortinet	FortiOS	7.0.0 to <= 7.0.13	Vulnerable
Fortinet	FortiPAM	1.2.0	Vulnerable
Fortinet	FortiPAM	1.1.0 to <= 1.1.2	Vulnerable
Fortinet	FortiPAM	1.0.0 to <= 1.0.3	Vulnerable
Fortinet	FortiProxy	7.4.0 to <= 7.4.2	Vulnerable
Fortinet	FortiProxy	7.2.0 to <= 7.2.8	Vulnerable
Fortinet	FortiProxy	7.0.0 to <= 7.0.15	Vulnerable

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Availability

High

Confidentiality

High

Integrity

High

Scope

Unchanged

Attack Complexity

Low

Attack Vector

Network

Privileges Req

None

User Interaction

None

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Source
9.8	CVSS 3.1	critical	3.9	5.9	Fortinet (CNA), NVD
9.8	CVSS 3.1	critical	—	—	Fortinet (CNA)

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

Weakness & attack patterns

CWE-134

CISA KEV details

CISA lists a CVE here once it has evidence of exploitation against real targets.

CISAThat month →

Listed

Oct 9, 2024

Federal deadline

Oct 30, 2024

passed 688 days ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a date to argue against.

Public exploit

Capability, not use: code existing is a different claim from anyone running it.

Exploit entries

Exploit-DB and CTI exploit indexes

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

Prioritize edge telemetry for network-reachable FortiSwitchManager, FortiOS, FortiPAM, FortiProxy.
Monitor for scanner or exploit-pattern traffic after 1 public PoC repositories were reported.

web/proxy/WAF logsapplication logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first — with the readings a source repeats on a schedule counted underneath rather than listed.

2026
Added · CVSS 3.1 9.8 (AV:N)
Jun 17, 2026 · NVD
2024
Added to CISA KEV catalog
Oct 9, 2024 · CISA
Initial · CVE published
Feb 15, 2024 · NVD

References

4 on the record

fortiguard.com/psirt/FG-IR-24-029
Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-23113
US Government Resource
www.fortiguard.com/psirt/FG-IR-24-029
Vendor Advisory
nvd.nist.gov/vuln/detail/CVE-2024-23113
Vendor Advisory

Elsewhere on this site

Fortinetevery CVE for this vendor
October 2024what else CISA listed
Unclassifiedsame class
CWE-134other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record1

What should defenders know first?

CVE-2024-23113 is Fortinet Multiple Products Format String Vulnerability, a critical vulnerability affecting FortiSwitchManager, FortiOS, FortiPAM, FortiProxy from Fortinet. The current evidence lists it in CISA KEV, and the exploit status is: Yes: CISA KEV signal present. Public exploit evidence is: 1 public PoC repositories reported; 0 marked weaponized in current dataset. The affected-version evidence is listed in the key facts and affected products tables. Defenders should first verify whether exposed or business-critical assets run those versions, then apply vendor patches or mitigations, restrict reachable attack surface, and preserve logs for detection review. CVSS 9.8 describes technical severity, while EPSS 62% helps estimate near-term exploit likelihood; neither replaces asset context. Unknown fields should remain explicit in tickets, and threat actor, IOC, victimology, or payload claims should not be added unless a cited source supports them. Monitor CISA KEV, vendor advisories, NVD changes, public PoC repositories, and internal telemetry for update triggers.