Security readout for executives and security teams
Plain-English summary
A highly privileged administrator can store unsafe content in the Firebox Tigerpaw integration configuration. Another user must view the affected page for the script to run. Expected impact is limited to low confidentiality and integrity effects in the viewer’s browser; availability is not affected.
Executive priority
Treat this as a planned, prompt remediation for affected managed appliances, not an emergency internet-wide incident. Prioritize environments with shared administration, third-party administrators, or active Tigerpaw integration because exploitation depends on privileged access and a second user viewing the stored content.
Technical view
CVE-2025-13936 is a stored cross-site scripting flaw (CWE-79) in the WatchGuard Fireware OS Tigerpaw Technology Integration module. CVSS 4.0 scores it 4.8: network-reachable, low complexity, high privileges required, and passive user interaction required. Effects are limited to the subsequent browser context.
Likely exposure
Exposure is most likely where a Firebox runs an affected Fireware OS build and uses or exposes the Tigerpaw integration configuration to privileged users. The supplied version entries are ambiguous and marked default-unaffected, so exact affected build boundaries should be confirmed with WatchGuard.
Exploitation context
The supplied evidence does not establish active exploitation, and the CVE is not identified as KEV. Exploitation requires high privileges to persist malicious input and another user to view the affected page, materially limiting likelihood compared with unauthenticated XSS.
Researcher notes
The CVSS vector is AV:N/AC:L/AT:N/PR:H/UI:P with no vulnerable-system impact and low confidentiality and integrity impact to a subsequent system. The provided affected-version records are internally unclear, and no patch version or specific workaround is included. Avoid asserting precise version ranges until the vendor advisory confirms them.
Mitigation direction
- Check WatchGuard advisories for exact affected builds and vendor-approved remediation.
- Apply the vendor-recommended Fireware OS update when confirmed for your appliance.
- Restrict privileged management access to trusted administrators and networks.
- Limit or disable the Tigerpaw integration if unnecessary and vendor guidance supports doing so.
Validation and detection
- Inventory Firebox appliances and record their exact Fireware OS builds.
- Identify appliances where the Tigerpaw Technology Integration module is configured.
- Compare each build and configuration against WatchGuard advisory WGSA-2025-00021.
- Confirm vendor-recommended updates or configuration changes were applied successfully.
- Review privileged configuration changes for unexpected Tigerpaw integration content.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-13936 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.8 (4.0)
- Known Exploited
- No
- Published
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
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
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——WatchGuardVulnerability scoring details
Base CVSS 4.0 score
4.8MediumVector: 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.watchguard.com/CVE-2025-13936CVE reference, WatchGuard · vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00021CVE reference, WatchGuard · vendor-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.