CVE-2025-25255

mediumpriority · track · 17EPSS 0.004 · 37 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.43% (37th) EPSS

CVSS 4.3 · medium

Is it mine?

30 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An Improperly Implemented Security Check for Standard vulnerability [CWE-358] vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.11, FortiProxy 7.2 all versions, FortiProxy 7.0.1 through 7.0.22 may allow an unauthenticated proxy user to bypass the domain fronting protection feature via crafted HTTP requests.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 1.4

v3.14.3mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.14.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:Csecondary · ENISA EU

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:Nsecondaryexploitability 2.8 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nsecondary · psirt@fortinet.comexploitability 3.9 · impact 1.4

v3.14mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:Csecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-358USCWE-358USCWE-358US

affected products (30)

Products and version ranges known to be affected.

Fortinet FortiOS <7.2.9all versionscert_bundDE
Fortinet FortiOS <7.6.3all versionscert_bundDE
Fortinet FortiOS <7.6.4all versionscert_bundDE
Fortinet FortiProxy <7.4.8all versionscert_bundDE
Fortinet FortiProxy <7.4.9all versionscert_bundDE
Fortinet FortiProxy <7.6.2all versionscert_bundDE
Fortinet FortiProxy <7.6.4all versionscert_bundDE
Fortinet FortiOS< 7.2.9cert_bundDE
Fortinet FortiOS< 7.6.3cert_bundDE
Fortinet FortiOS< 7.6.4cert_bundDE
Fortinet FortiProxy< 7.4.8cert_bundDE
Fortinet FortiProxy< 7.4.9cert_bundDE
Fortinet FortiProxy< 7.6.2cert_bundDE
Fortinet FortiProxy< 7.6.4cert_bundDE
Fortinet FortiOS≤ 7.6.0 ≤7.6.3enisa_euvdEU
Fortinet FortiProxy≤ 7.4.0 ≤7.4.11enisa_euvdEU
Fortinet FortiProxy≤ 7.0.1 ≤7.0.22enisa_euvdEU
Fortinet FortiProxy≤ 7.6.0 ≤7.6.3enisa_euvdEU
Fortinet FortiProxy≤ 7.2.0 ≤7.2.15enisa_euvdEU
Fortinet Inc. FortiOS7.6.0 → 7.6.4fstec_bduRU

showing 20 of 30

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2025-0355Kwetsbaarheden verholpen in Fortinet FortiOS en FortiProxyNL2025-11-07csaf · ncsc_nlNL
Fortinet heeft kwetsbaarheden verholpen in FortiOS en FortiProxy.
WID-SEC-W-2025-2306Fortinet FortiProxy und FortiOS: Mehrere SchwachstellenDeutsch2025-10-14csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Fortinet FortiOS und Fortinet FortiProxy ausnutzen um beliebigen Code auszuführen, Daten zu manipulieren, Informationen auszuspähen und Sicheheitsfunktionen zu umgehen.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl NVD CVE.org MITRE

published 2025-10-14modified 2026-10-18

references (4)

External citations — patches, advisories, analysis.

scry

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