Cyber Resilience

CVE-2024-23113

Fortinet Fortiproxy 7.0.0 – 7.0.14

CISA KEVActive ExploitationEUVD Exploited
Published
15 February 2024
Modified
17 June 2026
KEV Added
09 October 2024
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.62 99.1th percentile
Risk Priority 97 floored blend · peak EPSS

Summary

CVE-2024-23113 is a critical-severity Use of Externally-Controlled Format String (CWE-134) vulnerability in Fortinet Fortiproxy. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 0.9% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2024-23113 is a remotely exploitable format-string vulnerability (CWE-134) present in multiple Fortinet products. Affected versions include FortiOS 7.4.0–7.4.2, 7.2.0–7.2.6 and 7.0.0–7.0.13; FortiProxy 7.4.0–7.4.2, 7.2.0–7.2.8 and 7.0.0–7.0.14; FortiPAM 1.2.0, 1.1.0–1.1.2 and 1.0.0–1.0.3; and FortiSwitchManager 7.2.0–7.2.3 and 7.0.0–7.0.3. The flaw permits an attacker to supply a specially crafted packet that triggers unauthorized code or command execution.

An unauthenticated network attacker can send the malicious packet directly to an exposed interface, achieving full control over the affected device with no user interaction or credentials required. The CVSS 3.1 score of 9.8 reflects the combination of network attack vector, low complexity, and complete confidentiality, integrity and availability impact.

Fortinet’s advisory FG-IR-24-029 and the corresponding CISA entry recommend applying the vendor-supplied patches or upgrading to fixed releases; organizations should also restrict management access and monitor for anomalous traffic until remediation is complete.

The vulnerability appears in CISA’s Known Exploited Vulnerabilities catalog, confirming observed in-the-wild exploitation. Its EPSS score has reached a peak of 0.58 with a current value of 0.54, indicating sustained attacker interest after disclosure.

EU & UK References

Vulnerability Data

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…

more

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.

CWE(s)
CWE-134
KEV Date Added
09 October 2024

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-40721Same product: Fortinet Fortios
CVE-2023-45583Same product: Fortinet Fortios
CVE-2023-36639Same product: Fortinet Fortios
CVE-2023-29181Same product: Fortinet Fortios
CVE-2023-36640Same product: Fortinet Fortios
CVE-2024-45324Same product: Fortinet Fortios
CVE-2022-40684Same product: Fortinet Fortiosboth on KEV
CVE-2024-26010Same product: Fortinet Fortios
CVE-2018-13383Same product: Fortinet Fortiosboth on KEV
CVE-2024-21762Same product: Fortinet Fortiosboth on KEV

Affected Assets

fortinet
fortiproxy
7.0.0 — 7.0.14 · 7.2.0 — 7.2.8 · 7.4.0 — 7.4.2
fortinet
fortiswitchmanager
7.0.0 — 7.0.3 · 7.2.0 — 7.2.3
fortinet
fortios
7.0.0 — 7.0.13 · 7.2.0 — 7.2.6 · 7.4.0 — 7.4.2
fortinet
fortipam
1.2.0 · 1.0.0 — 1.0.3 · 1.1.0 — 1.1.2

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and static analysis can discover format-string vulnerabilities before deployment.

SI-10 Information Input Validation good match

Input validation can reject or sanitize externally supplied format strings before they reach formatting functions.

SA-15 Development Process, Standards, and Tools partial match

Secure development standards and tools can mandate use of static format strings or safe formatting APIs.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent external format strings via code review, static analysis, and safe APIs.

ID.RA-01 partial match
prevents

Vulnerability identification can discover existing format-string flaws but does not prevent their introduction.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect format-string vulnerabilities before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates input validation and safe API usage that can prevent externally-controlled format strings.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify safe formatting functions and ban uncontrolled format strings.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles discourage dangerous string-handling patterns that lead to format-string issues.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly forbid the use of untrusted format strings and prescribe safe alternatives.

References