CVE-2025-0178: watchguard fireware Improper Input Validation
Vulnerability summary
CVE-2025-0178 is a medium (CVSS 6.1) Improper Input Validation vulnerability in watchguard fireware. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 13.8% of scored vulnerabilities.
Timeline
- 14-02-2025PublishedVulnerability first disclosed.
- 08-08-2026Last modifiedVulnerability information updated.
Description
An Improper Input Validation vulnerability in WatchGuard Fireware OS allows an attacker with network access to manipulate the value of the HTTP Host header in requests sent to the Web UI. An attacker could exploit this vulnerability to redirect users to malicious websites, poison the web cache, or inject malicious JavaScript into responses sent by the Web UI.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST5.1MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
0.00 pp
From 0.24% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Watchguard2 products
- fireware≥ 12.0.0, < 12.11.1 | ≥ 12.5, < 12.5.13
- fireware os≥ 12.0, < 12.11.1 | ≥ 12.0, < 12.5.13
1 vendor · 2 products
References
2 links- psirt.watchguard.com/CVE-2025-0178Vendor Advisory
- www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00003Vendor Advisory