Type Vulnerability
Fortinet FortiClient EMS contains a SQL injection vulnerability that may allow an unauthenticated attacker to execute unauthorised code or commands via specifically crafted HTTP requests.
Fortinet · SQL injection
Fortinet FortiClient EMS SQL Injection Vulnerability
CVE-2026-21643
What this means
This is rated critical severity (9.8 out of 10). It is on the known-exploited catalogue, which means attacks using it have already been seen. Ask IT whether Fortinet Forticlientems is in your estate, and treat that as the priority.
Full vendor description
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.
Scoring and exploitation
9.8/ 10
CVSS 3.1 base scoreCritical
Exploitable over the network without any account, and no one has to click or open anything. High impact on confidentiality, integrity and availability.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionNoneUI:N
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- Elevated attack likelihood (~97.7% in 30 days)Model estimate (): a probability signal, not confirmed exploitation
- Exploited in the wild
- Yes — confirmed exploitation (US CISA )
- Not reported
- Listed product
- Fortinet FortiClient EMS
Weaknesses
CWE-89
Affected products ()
- Fortinet Forticlientems
Show the raw CPE strings (1)
- cpe:2.3:a:fortinet:forticlientems:7.4.4:*:*:*:*:*:*:*
References
3 links from the CVE record, grouped by site; the vendor's advisory comes first.
fortiguard.fortinet.com1 linkVendor advisory
- FG-IR-25-1142 (opens in a new tab)Vendor Advisory
github.com1 link
cisa.gov1 link
- known-exploited-vulnerabilities-catalog (opens in a new tab)US Government Resource