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Vulnerabilities fixed in Fortinet FortiOS and FortiProxy

🗓️ 07 Nov 2025 10:07:28Reported by NCSCType 
ncsc
 ncsc🔗 advisories.ncsc.nl👁 19 Views

Fortinet fixed FortiOS/FortiProxy flaws: code execution, MITM, domain-fronting bypass, XSS.

Related
Refs
ReporterTitlePublishedViews
Family
GithubExploit		Exploit for Improperly Implemented Security Check for Standard in Fortinet Fortiproxy
19 Nov 202507:47
–githubexploit
GithubExploit		Exploit for Improper Validation of Certificate with Host Mismatch in Fortinet Fortiproxy
3 Nov 202509:00
–githubexploit
ATTACKERKB		CVE-2025-31366
14 Oct 202515:22
–attackerkb
ATTACKERKB		CVE-2025-47890
14 Oct 202515:22
–attackerkb
ATTACKERKB		CVE-2025-54822
14 Oct 202515:23
–attackerkb
BDU FSTEC		The vulnerability of the Zero Trust Network Access (ZTNA) technology in FortiOS operating systems and FortiProxy proxy servers, which can be exploited by attackers to perform “man-in-the-middle” attacks.
24 Oct 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of the FortiOS operating systems and the FortiProxy proxy server, related to improper security checks for standard elements, allows attackers to circumvent existing security restrictions.
25 Nov 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of the FortiOS operating systems and the FortiProxy proxy server, related to the disclosure of information through registration files, allows attackers to gain unauthorized access to the protected information.
28 Nov 202500:00
–bdu_fstec
BDU FSTEC		The vulnerability of FortiOS operating systems and FortiProxy proxy servers in terms of authentication procedures allows attackers to gain unauthorized access to protected information.
1 Dec 202500:00
–bdu_fstec
BDU FSTEC		The vulnerabilities of the FortiOS operating systems, the FortiProxy proxy server for protecting against internet attacks, and the scalable cloud-based security system FortiSASE are related to the lack of protective measures for the website structure. This allows attackers to carry out cross-site scripting attacks.
1 Dec 202500:00
–bdu_fstec
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07 Nov 2025 10:07Current
7.3High risk
Vulners AI Score7.3
CVSS 3.17.5 - 7.8
EPSS0.00398
SSVC
code executionman in middledomain fronting bypasscross site scriptingopen redirectstwo factor leakagefortiosfortiproxy
19