Security readout for executives and security teams
Plain-English summary
CVE-2025-14733 is a critical WatchGuard Fireware OS flaw that can let an unauthenticated remote attacker run code on affected Firebox devices. Exposure depends on specific IKEv2 VPN configurations. Treat this as urgent for perimeter devices, but the provided sources do not show confirmed active exploitation.
Executive priority
High urgency. This affects security perimeter infrastructure and has unauthenticated remote code execution impact. Direct teams to verify exposure and follow WatchGuard guidance quickly. If affected VPN configurations exist on internet-facing devices, prioritize remediation ahead of routine patch cycles.
Technical view
The issue is a CWE-787 out-of-bounds write in WatchGuard Fireware OS iked. It affects Fireware OS 11.10.2 through 11.12.4_Update1, 12.0 through 12.11.5, and 2025.1 through 2025.1.3 when Mobile User VPN with IKEv2 or Branch Office VPN using IKEv2 with a dynamic gateway peer is configured.
Likely exposure
Organizations using WatchGuard Firebox appliances with affected Fireware OS versions and the specified IKEv2 VPN features are potentially exposed, especially where VPN services are reachable from the internet. Fireware OS versions outside the listed ranges, or devices without those configurations, are not shown as affected in the provided data.
Exploitation context
The CVSS 4.0 score is 9.3: network-accessible, low complexity, no privileges, and no user interaction. The provided bundle marks CISA KEV as false and includes no cited evidence of exploitation in the wild, exploit availability, indicators of compromise, or attacker activity.
Researcher notes
Evidence is limited to the CVE record, WatchGuard advisory reference, and CISA KEV lookup. Fixed versions, workaround details, exploit maturity, and IoCs are not included in the source bundle. Do not assume exploitation. Confirm operational remediation details directly with WatchGuard’s advisory before issuing change instructions.
Mitigation direction
- Inventory WatchGuard Firebox devices and Fireware OS versions immediately.
- Identify use of Mobile User VPN with IKEv2.
- Identify Branch Office VPN using IKEv2 with dynamic gateway peers.
- Consult WatchGuard advisory WGSA-2025-00027 for supported fixes or mitigations.
- Prioritize vendor-directed updates for internet-facing affected appliances.
- Monitor WatchGuard and CISA sources for updated exploitation or remediation guidance.
Validation and detection
- Compare Fireware OS versions against the affected ranges.
- Review VPN configuration for the two affected IKEv2 scenarios.
- Confirm remediation status against WatchGuard advisory WGSA-2025-00027.
- Document any affected internet-facing VPN endpoints for priority handling.
- Recheck CISA KEV status before final risk acceptance.
Public sources used
Michael Williams reviewed this cited source version on .
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
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——Primary CVE scoreVulnerability 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
Source materials
- CVE List V5 sourceCVE List V5
- https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00027CVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-14733CVE reference · 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.