A use of externally-controlled format string vulnerability [CWE-134] vulnerability in Fortinet allows a privileged attacker to execute arbi…

published 2025-02-11 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2023-45275

cvss: 6.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

A use of externally-controlled format string vulnerability [CWE-134] vulnerability in Fortinet allows a privileged attacker to execute arbitrary code or commands via specially crafted requests.

Patch / fix

fixed in 4

fortinet fortiswitchmanager 7.0.3, 7.2.3
fortinet fortiproxy 7.0.15, 7.2.8
fortinet fortios 7.0.14, 7.2.7
fortinet fortipam 1.2.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-074-05 updated 2026-01-14 cvss 6.7

Siemens RUGGEDCOM APE1808

Siemens RUGGEDCOM APE1808
affected: fixed in V7.4.3

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 20 mo ago (2025-02-11)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.3	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Fortinet FortiPAM
Fortinet FortiSwitchManager
Fortinet FortiOS
Fortinet FortiProxy

Classification

Weakness

CWE-134 Use of Externally-Controlled Format String

Technology feeds

Fortinet rss critical rss

References

fortiguard.com /psirt/FG-IR-23-261
vendor-advisory

Sources

CVE List CVE-2023-40721
NVD CVE-2023-40721

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary