Security readout for executives and security teams
Plain-English summary
A flaw in WatchGuard Firebox VPN processing can let an unauthenticated remote attacker take control of an exposed device. Risk may persist after vulnerable IKEv2 configurations are deleted. Because CISA lists the flaw as known exploited, affected Fireboxes should be identified and remediated urgently.
Executive priority
Treat this as an emergency perimeter-security issue. Immediately inventory WatchGuard Fireboxes, prioritize internet-reachable VPN appliances, and apply WatchGuard's prescribed remediation. Because exploitation is documented through CISA KEV and deleted configurations may leave exposure, require evidence of configuration-history review and completed remediation—not only confirmation of current settings.
Technical view
CVE-2025-14733 is an out-of-bounds write in Fireware OS's iked process. Network-reachable, unauthenticated exploitation may achieve arbitrary code execution with high confidentiality, integrity, and availability impact. The supplied CVSS v4.0 score is 9.3. Exact affected build ranges and a named fixed version are not established by the bundle.
Likely exposure
Exposure includes Fireboxes configured for mobile-user VPN with IKEv2 or branch-office IKEv2 VPN using a dynamic gateway peer. A device may remain vulnerable after deleting those configurations when a static-gateway branch-office VPN remains configured. Configuration history therefore matters; the supplied version entries are insufficient for precise build-level conclusions.
Exploitation context
CISA KEV inclusion supports that this vulnerability has been exploited in the wild. The bundle does not describe exploitation scale, targeted organizations, indicators of compromise, or attacker procedures. Remote access without authentication and potential arbitrary code execution substantially increase business risk.
Researcher notes
The core claim is strong: CWE-787 in iked permits unauthenticated remote code execution under specified IKEv2 conditions. However, the bundle's affected-version records repeat Fireware 12.0 and mark default status as unaffected, preventing reliable range interpretation. Consult the live WatchGuard advisory for branch-specific applicability, remediation, and detection guidance. No exploit mechanics or indicators are provided.
Mitigation direction
- Identify Fireboxes with current or historical configurations described in the WatchGuard advisory.
- Consult WatchGuard's advisory for the exact corrected release or vendor-approved mitigation for each Fireware branch.
- Apply the vendor-prescribed update or mitigation through an expedited change process.
- Restrict untrusted access to affected VPN services until remediation, where operationally feasible.
- Do not treat deletion of a previously vulnerable IKEv2 configuration as sufficient remediation.
Validation and detection
- Record each Firebox model, exact Fireware build, VPN configuration, and relevant configuration history.
- Check each installed build against WatchGuard's current advisory rather than relying on the bundle's ambiguous version entries.
- Confirm whether static-gateway VPNs coexist with previously deleted mobile-user or dynamic-gateway IKEv2 configurations.
- Verify the vendor-prescribed remediation is installed and persists after restart.
- Review available device and perimeter telemetry; the supplied sources provide no specific compromise indicators.
Public sources used
The source record changed after analysis: Material source record changed after analysis.
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-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2025-14733 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
- Critical
- CVSS
- 9.3 (4.0)
- Known Exploited
- Yes
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Red
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.
CISA KEV status
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:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Red——WatchGuardVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Red
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.
- Added to KEVCISA-ADP
CISA Known Exploited Vulnerabilities metadata lists this CVE as known exploited.
- ADP timelineCISA-ADP
CVE-2025-14733 added to CISA KEV
- 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
- 2025-12-19T00:00:00.000Z: CVE-2025-14733 added to CISA KEV
Source materials
- CVE List V5 sourceCVE List V5
- https://psirt.watchguard.com/CVE-2025-14733CVE reference, WatchGuard · vendor-advisory
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027CVE reference, WatchGuard · vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14733CVE reference, CISA-ADP · government-resource
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.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.