XSS in Smoothwall Express
CVE-2019-25380
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (12.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Smoothwall Express — versions 3.1
- Smoothwall Express — versions 3.1
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/46333 (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.smoothwall.org (Product, product)
- www.vulncheck.com/advisories/smoothwall-express-dhcpcgi-cross-site-scripting (Broken Link, third-party-advisory)
Frequently asked questions
- What is CVE-2019-25380?
- CVE-2019-25380 is a medium-severity vulnerability in Smoothwall Express, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-02-16.
- How severe is CVE-2019-25380?
- Medium severity. CVSS v3 base score is 6.1 out of 10.