Security readout for executives and security teams
Plain-English summary
A malicious or compromised Firebox administrator could save script content in IPS configuration that runs when another management user views it. This could manipulate that user’s browser-based management session. The requirement for administrator privileges and another user’s interaction limits broad exposure, but privileged-session compromise remains meaningful.
Executive priority
Treat this as a scheduled, near-term remediation item rather than an emergency Internet-wide incident. Prioritize appliances with multiple administrators, externally reachable management interfaces, questionable privileged-account security, or unexplained IPS configuration changes. Escalate immediately if administrator compromise or configuration tampering is suspected.
Technical view
CVE-2025-6946 is a stored cross-site scripting flaw (CWE-79) in the Firebox management interface’s IPS configuration. Exploitation is remote but requires high privileges and passive interaction by another management user. CVSS 4.0 scores it 4.8, with low subsequent-system confidentiality and integrity impacts and no indicated availability impact.
Likely exposure
Exposure is most likely where multiple administrators use the Firebox management interface and an untrusted or compromised administrator can modify IPS configuration. The supplied version data is contradictory: it lists Fireware OS 12.0 while marking it unaffected. Exact affected releases therefore require confirmation from WatchGuard’s advisory or asset-specific support information.
Exploitation context
The source bundle does not identify public exploitation, proof-of-concept availability, or inclusion in CISA KEV. Successful abuse requires authenticated administrator privileges and another management user to encounter the stored content, making compromised credentials or malicious insiders the more plausible contexts.
Researcher notes
The affected-version evidence in the supplied bundle is internally inconsistent and duplicated, so version scope should not be inferred from it. The attack chain is stored input through IPS configuration followed by rendering in another management user’s interface. Sources do not identify the vulnerable field, sanitization failure, patched version, workaround, or observed exploitation.
Mitigation direction
- Check WatchGuard’s advisory for confirmed affected versions, corrected releases, and official workarounds.
- Apply the vendor-provided update or mitigation once applicability is confirmed.
- Restrict Firebox management access to trusted administrative networks and authorized personnel.
- Review administrator accounts and promptly revoke unnecessary or suspicious privileged access.
- Limit management-interface use until remediation if IPS configuration integrity is uncertain.
Validation and detection
- Inventory Firebox appliances and record their exact Fireware OS versions.
- Compare each version against WatchGuard’s current affected-version and remediation guidance.
- Review IPS configuration changes and administrator activity for unexpected entries.
- Confirm management access is restricted and all administrator accounts remain necessary.
- After remediation, verify the installed version matches WatchGuard’s corrected release guidance.
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-2025-6946 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.
- Source timelineWatchGuard
Updated to add Fireware OS 12.5.13 as a resolved release
- 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-2025-6946CVE reference, WatchGuard · vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00011CVE 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.