CVE-2026-21643

criticalpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.939 · 100 %ileexploit · PoCDEEUNLRUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 2 exploits · PoC

Likely / severe?

93.9% (100th) EPSS

CVSS 9.8 · critical

Is it mine?

6 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

added 2026-04-13remediate by 2026-04-16

required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS · scored 2026-10-23

Fortinet FortiClient EMS SQL Injection Vulnerability

An improper neutralization of special elements used in an sql command ('sql injection') vulnerability in Fortinet FortiClientEMS 7.4.4 may allow an unauthenticated attacker to execute unauthorized code or commands via specifically crafted HTTP requests.

cvss

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

9.8

010

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

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:Csecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · psirt@fortinet.comexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:Csecondary · NCSC-NL NL

ssvc

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

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-89USCWE-89USCWE-89US

exploits (2)

Public proof-of-concept and weaponised exploit code.

0xBlackash/CVE-2026-21643CVE-2026-21643PoC · poc_in_github
alirezac0/CVE-2026-21643Python PoC and Nuclei template for CVE-2026-21643 (Pre-Authentication SQL Injection in FortiClient EMS 7.4.4)PoC · poc_in_github

affected products (6)

Products and version ranges known to be affected.

Fortinet FortiClient EMS <7.4.5all versionscert_bundDE
Fortinet FortiClient≤ EMS <7.4.5cert_bundDE
Fortinet FortiClientEMS≤ 7.4.4enisa_euvdEU
Fortinet Inc. FortiClientEMS≤ 7.4.4fstec_bduRU
Fortinet FortiClientEMS≤ vers:unknown/*ncsc_nlNL
fortinet forticlientems= 7.4.4nvdUScpe:2.3:a:fortinet:forticlientems:*:*:*:*:*:*:*:*

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0047Kwetsbaarheid verholpen in Fortinet FortiClient EMSNL2026-02-09csaf · ncsc_nlNL
Fortinet heeft een kwetsbaarheid verholpen in FortiClient EMS (versie 7.4.4).
WID-SEC-W-2026-0343Fortinet FortiClientEMS: Schwachstelle ermöglicht CodeausführungDeutsch2026-02-08csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Fortinet FortiClientEMS ausnutzen, um eine SQL-Injection durchzuführen und so beliebigen Code auszuführen.

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 NVD CVE.org MITRE

published 2026-02-06modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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