Medium severity · published Feb 16, 2026
CVE-2019-25380
Smoothwall Express 3.1 'dhcp.cgi' Cross-Site Scripting
6.1
CVSS
0.3%
EPSS
No
On KEV
Description
Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple reflected cross-site scripting vulnerabilities in the dhcp.cgi script that allow attackers to inject malicious scripts through multiple parameters. Attackers can submit POST requests to dhcp.cgi with script payloads in parameters such as BOOT_SERVER, BOOT_FILE, BOOT_ROOT, START_ADDR, END_ADDR, DNS1, DNS2, NTP1, NTP2, WINS1, WINS2, DEFAULT_LEASE_TIME, MAX_LEASE_TIME, DOMAIN_NAME, NIS_DOMAIN, NIS1, NIS2, STATIC_HOST, STATIC_DESC, STATIC_MAC, and STATIC_IP to execute arbitrary JavaScript in user browsers.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
Smoothwall Express · Smoothwall
3.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-25380
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-25380
Product
http://www.smoothwall.org
Exploit
https://www.exploit-db.com/exploits/46333
Broken Link
https://www.vulncheck.com/advisories/smoothwall-express-dhcpcgi-cross-site-scripting
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