WatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in spamBlocker Module
Noroxi assessment
Priority: Monitor (action score 19/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.30% (FIRST EPSS).
- Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No special conditions are required; it is repeatable.
- According to the record, no fixed version is available yet.
Low priority for now. Update when a fix is released; follow the vendor's advisory.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
A stored cross-site scripting (XSS) vulnerability exists in the management interface of WatchGuard Firebox appliances via the spamBlocker module. An authenticated remote attacker with administrator privileges could exploit this vulnerability to execute arbitrary JavaScript code in the Firebox management interface of another management user.
- Published
- Feb 14, 2025
- Updated
- Aug 7, 2026
- EPSS
- 0.3% · 21th percentile
- CWE
- CWE-79
Report tools
Action score
19
Monitor
Low priority for now.
- CVSS
- 19 / 40 · 4.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · WatchGuard
- 4.8
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- No fixed version yet
If any of these changes, we'll tell you in the daily email digest.
Running WordPress? Scan your site free with WP Lens
Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| watchguard | fireware | cpe:2.3:o:watchguard:fireware |
| watchguard | firebox m270 | cpe:2.3:h:watchguard:firebox_m270 |
| watchguard | firebox m290 | cpe:2.3:h:watchguard:firebox_m290 |
| watchguard | firebox m370 | cpe:2.3:h:watchguard:firebox_m370 |
| watchguard | firebox m390 | cpe:2.3:h:watchguard:firebox_m390 |
| watchguard | firebox m440 | cpe:2.3:h:watchguard:firebox_m440 |
| watchguard | firebox m4600 | cpe:2.3:h:watchguard:firebox_m4600 |
| watchguard | firebox m470 | cpe:2.3:h:watchguard:firebox_m470 |
| watchguard | firebox m4800 | cpe:2.3:h:watchguard:firebox_m4800 |
| watchguard | firebox m5600 | cpe:2.3:h:watchguard:firebox_m5600 |
| watchguard | firebox m570 | cpe:2.3:h:watchguard:firebox_m570 |
| watchguard | firebox m5800 | cpe:2.3:h:watchguard:firebox_m5800 |
and 16 more
Limit the impact of XSS
This is a cross-site scripting (XSS) vulnerability. A well-configured Content-Security-Policy doesn't fix it, but greatly reduces its impact. Check your site's CSP and other security headers for free.
Check security headersAffected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- watchguard fireware12.0.0 and later · before 12.11.1
- watchguard fireware12.5 and later · before 12.5.13
Versions reported by the vendor
Affected version ranges reported by the assigning authority (WatchGuard). Independent of NVD's CPE analysis and usually ahead of it.
WatchGuard Fireware OS
- 12.0 and later · before 12.11.1affected
- 12.0 and later · before 12.5.13affected
Same product
watchguard: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-9242WatchGuard Firebox iked Out of Bounds Write VulnerabilityKEV95Now
- CVE-2022-26318On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786.KEV92Now
- CVE-2025-14733WatchGuard Firebox iked Out of Bounds Write VulnerabilityKEV75This week
Published before and after this one in the same product
- ← EarlierCVE-2024-5974Jul 8, 2024 · Firebox Authenticated Buffer Overflow Vulnerability34Monitor
- ← EarlierCVE-2025-0178Feb 14, 2025 · WatchGaurd Firebox Host Header Injection Vulnerability20Monitor
- Later →CVE-2025-11838Dec 4, 2025 · WatchGuard Firebox iked Memory Corruption Vulnerability34Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-3343382 days apartWatchGuard Firebox Reflected Cross-Site-Scripting (XSS) Vulnerability in Fireware Web UI20Monitor
- CVE-2025-13936293 days apartWatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Tigerpaw Technology Integration Configuration19Monitor
- CVE-2025-13937293 days apartWatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in ConnectWise Technology Integration Configuration19Monitor
- CVE-2025-13938293 days apartWatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Autotask Technology Integration Configuration19Monitor
- CVE-2025-13939293 days apartWatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in Gateway Wireless Controller19Monitor
- CVE-2025-6946293 days apartWatchGuard Firebox Stored Cross-Site-Scripting (XSS) Vulnerability in IPS Configuration19Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- Administrator privileges are required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- Integrity
- Availability
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- P
- Scope
- X
Weakness class (CWE)
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/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
nvd-secondary
Root cause
User content is inserted into the page as HTML. The browser interprets the content as code rather than data.
The bug in code
The whole CWE-79 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
commentEl.innerHTML = comment.body;Fixed
commentEl.textContent = comment.body;Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Show all references (1 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.