CVE-2026-13084 - Vulnerability Details

- Null Pointer Dereference in WatchGuard Fireware OS iked Process

Description

A null pointer dereference vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to create a denial-of-service (DoS) condition by sending specially crafted IKEv2 messages. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer.

This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2

Published: 2026-07-02

Score: 8.7 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

A null pointer dereference exists in the IKEv2 (iked) process of WatchGuard Fireware OS, enabling a remote unauthenticated attacker to send specially crafted IKEv2 messages that crash the VPN daemon and trigger a denial‑of‑service condition. The flaw is a classic CWE‑476 null pointer dereference and impacts only the VPN service, interrupting connectivity for users.

Affected Systems

The vulnerability affects WatchGuard Fireware OS versions 11.10.2 through 11.12.4_Update1, 12.0 through 12.12, and 2025.1 through 2026.2. Both the Mobile User susceptible.

Risk and Exploitability

The the flaw as high severity, while the EPSS score of less than 1% indicates a very low exploitation probability. The vulnerability is not listed in CISA KEV, meaning no confirmed exploits have been observed. Attackers need only send untrusted IKEv2 traffic to a vulnerable VPN endpoint, no authentication is required, making the attack vector remote and straightforward.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

WatchGuard

Fireware OS

unaffected

Version	Status	Constraints
`2025.1`	affected	< 2026.2.1
`12.0`	affected	< 12.12.1
`11.10.2`	affected	< *

WatchGuard

Fireware OS

unaffected

Version	Status	Constraints
`12.0`	affected	< 12.11.9

WatchGuard

Fireware OS

unaffected

Version	Status	Constraints
`12.0`	affected	< 12.5.19

Configuration 1 [-]

AND

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:watchguard:firebox_t15:-:::::::*
	cpe:2.3:h:watchguard:firebox_t35:-:::::::*

Configuration 2 [-]

OR	cpe:2.3:o:watchguard:fireware::::::::
	cpe:2.3:o:watchguard:fireware:11.12.4:-::::::
	cpe:2.3:o:watchguard:fireware:11.12.4:u1::::::

Configuration 3 [-]

AND

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

OR	cpe:2.3:a:watchguard:firebox_cloud:-:::::::*
	cpe:2.3:h:watchguard:firebox_m270:-:::::::*
	cpe:2.3:h:watchguard:firebox_m290:-:::::::*
	cpe:2.3:h:watchguard:firebox_m370:-:::::::*
	cpe:2.3:h:watchguard:firebox_m390:-:::::::*
	cpe:2.3:h:watchguard:firebox_m440:-:::::::*
	cpe:2.3:h:watchguard:firebox_m4600:-:::::::*
	cpe:2.3:h:watchguard:firebox_m470:-:::::::*
	cpe:2.3:h:watchguard:firebox_m4800:-:::::::*
	cpe:2.3:h:watchguard:firebox_m5600:-:::::::*
	cpe:2.3:h:watchguard:firebox_m570:-:::::::*
	cpe:2.3:h:watchguard:firebox_m5800:-:::::::*
	cpe:2.3:h:watchguard:firebox_m590:-:::::::*
	cpe:2.3:h:watchguard:firebox_m670:-:::::::*
	cpe:2.3:h:watchguard:firebox_m690:-:::::::*
	cpe:2.3:h:watchguard:firebox_nv5:-:::::::*
	cpe:2.3:h:watchguard:firebox_t20:-:::::::*
	cpe:2.3:h:watchguard:firebox_t25:-:::::::*
	cpe:2.3:h:watchguard:firebox_t40:-:::::::*
	cpe:2.3:h:watchguard:firebox_t45:-:::::::*
	cpe:2.3:h:watchguard:firebox_t55:-:::::::*
	cpe:2.3:h:watchguard:firebox_t70:-:::::::*
	cpe:2.3:h:watchguard:firebox_t80:-:::::::*
	cpe:2.3:h:watchguard:firebox_t85:-:::::::*
	cpe:2.3:h:watchguard:fireboxv:-:::::::*

Configuration 4 [-]

AND

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*

OR	cpe:2.3:h:watchguard:firebox_m295:-:::::::*
	cpe:2.3:h:watchguard:firebox_m395:-:::::::*
	cpe:2.3:h:watchguard:firebox_m495:-:::::::*
	cpe:2.3:h:watchguard:firebox_m595:-:::::::*
	cpe:2.3:h:watchguard:firebox_m695:-:::::::*
	cpe:2.3:h:watchguard:firebox_t115-w:-:::::::*
	cpe:2.3:h:watchguard:firebox_t125:-:::::::*
	cpe:2.3:h:watchguard:firebox_t125-w:-:::::::*
	cpe:2.3:h:watchguard:firebox_t145:-:::::::*
	cpe:2.3:h:watchguard:firebox_t145-w:-:::::::*
	cpe:2.3:h:watchguard:firebox_t185:-:::::::*

No data.

Vendor Product Confidence Versions

Watchguard

Fireware Os

95%

Version	Status	Scheme	Platform
`[11.10.2,11.12.4+541730]`	affected	semver	—
`[12.0,12.12]`	affected	generic	—
`[12.5,12.5.18]`	affected	generic	—
`[2025.1,2026.2]`	affected	generic	—

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Remediation

Vendor Solution

Fireware OS 2026.2.1, Fireware OS 12.12.1, Fireware OS 12.5.19, Fireware OS 12.11.9

OpenCVE Recommended Actions

Apply the latest firmware update that addresses the null pointer dereference in the IKEv2 process.
If patching is delayed, restrict inbound IKEv2 traffic to known, trusted peers or temporarily disable IKEv2 on the vulnerable VPN configuration.
Deploy network monitoring or intrusion detection rules to flag abnormal IKEv2 traffic patterns that may indicate exploitation attempts.

Generated by OpenCVE AI on August 1, 2026 at 20:59 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00499.

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
https://psirt.watchguard.com/CVE-2026-13084
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00024

History

Fri, 14 Aug 2026 13:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Watchguard firebox Cloud Watchguard firebox M270 Watchguard firebox M290 Watchguard firebox M295 Watchguard firebox M370 Watchguard firebox M390 Watchguard firebox M395 Watchguard firebox M440 Watchguard firebox M4600 Watchguard firebox M470 Watchguard firebox M4800 Watchguard firebox M495 Watchguard firebox M5600 Watchguard firebox M570 Watchguard firebox M5800 Watchguard firebox M590 Watchguard firebox M595 Watchguard firebox M670 Watchguard firebox M690 Watchguard firebox M695 Watchguard firebox Nv5 Watchguard firebox T115-w Watchguard firebox T125 Watchguard firebox T125-w Watchguard firebox T145 Watchguard firebox T145-w Watchguard firebox T15 Watchguard firebox T185 Watchguard firebox T20 Watchguard firebox T25 Watchguard firebox T35 Watchguard firebox T40 Watchguard firebox T45 Watchguard firebox T55 Watchguard firebox T70 Watchguard firebox T80 Watchguard firebox T85 Watchguard fireboxv Watchguard fireware
CPEs		cpe:2.3:a:watchguard:firebox_cloud:-:::::::* cpe:2.3:h:watchguard:firebox_m270:-:::::::* cpe:2.3:h:watchguard:firebox_m290:-:::::::* cpe:2.3:h:watchguard:firebox_m295:-:::::::* cpe:2.3:h:watchguard:firebox_m370:-:::::::* cpe:2.3:h:watchguard:firebox_m390:-:::::::* cpe:2.3:h:watchguard:firebox_m395:-:::::::* cpe:2.3:h:watchguard:firebox_m440:-:::::::* cpe:2.3:h:watchguard:firebox_m4600:-:::::::* cpe:2.3:h:watchguard:firebox_m470:-:::::::* cpe:2.3:h:watchguard:firebox_m4800:-:::::::* cpe:2.3:h:watchguard:firebox_m495:-:::::::* cpe:2.3:h:watchguard:firebox_m5600:-:::::::* cpe:2.3:h:watchguard:firebox_m570:-:::::::* cpe:2.3:h:watchguard:firebox_m5800:-:::::::* cpe:2.3:h:watchguard:firebox_m590:-:::::::* cpe:2.3:h:watchguard:firebox_m595:-:::::::* cpe:2.3:h:watchguard:firebox_m670:-:::::::* cpe:2.3:h:watchguard:firebox_m690:-:::::::* cpe:2.3:h:watchguard:firebox_m695:-:::::::* cpe:2.3:h:watchguard:firebox_nv5:-:::::::* cpe:2.3:h:watchguard:firebox_t115-w:-:::::::* cpe:2.3:h:watchguard:firebox_t125-w:-:::::::* cpe:2.3:h:watchguard:firebox_t125:-:::::::* cpe:2.3:h:watchguard:firebox_t145-w:-:::::::* cpe:2.3:h:watchguard:firebox_t145:-:::::::* cpe:2.3:h:watchguard:firebox_t15:-:::::::* cpe:2.3:h:watchguard:firebox_t185:-:::::::* cpe:2.3:h:watchguard:firebox_t20:-:::::::* cpe:2.3:h:watchguard:firebox_t25:-:::::::* cpe:2.3:h:watchguard:firebox_t35:-:::::::* cpe:2.3:h:watchguard:firebox_t40:-:::::::* cpe:2.3:h:watchguard:firebox_t45:-:::::::* cpe:2.3:h:watchguard:firebox_t55:-:::::::* cpe:2.3:h:watchguard:firebox_t70:-:::::::* cpe:2.3:h:watchguard:firebox_t80:-:::::::* cpe:2.3:h:watchguard:firebox_t85:-:::::::* cpe:2.3:h:watchguard:fireboxv:-:::::::* cpe:2.3:o:watchguard:fireware:::::::: cpe:2.3:o:watchguard:fireware:11.12.4:-:::::: cpe:2.3:o:watchguard:fireware:11.12.4:u1::::::
Vendors & Products		Watchguard firebox Cloud Watchguard firebox M270 Watchguard firebox M290 Watchguard firebox M295 Watchguard firebox M370 Watchguard firebox M390 Watchguard firebox M395 Watchguard firebox M440 Watchguard firebox M4600 Watchguard firebox M470 Watchguard firebox M4800 Watchguard firebox M495 Watchguard firebox M5600 Watchguard firebox M570 Watchguard firebox M5800 Watchguard firebox M590 Watchguard firebox M595 Watchguard firebox M670 Watchguard firebox M690 Watchguard firebox M695 Watchguard firebox Nv5 Watchguard firebox T115-w Watchguard firebox T125 Watchguard firebox T125-w Watchguard firebox T145 Watchguard firebox T145-w Watchguard firebox T15 Watchguard firebox T185 Watchguard firebox T20 Watchguard firebox T25 Watchguard firebox T35 Watchguard firebox T40 Watchguard firebox T45 Watchguard firebox T55 Watchguard firebox T70 Watchguard firebox T80 Watchguard firebox T85 Watchguard fireboxv Watchguard fireware
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

Mon, 10 Aug 2026 19:30:00 +0000

Type	Values Removed	Values Added
CPEs	cpe:2.3:a:watchguard:fireware_os::::::::11.10.2 cpe:2.3:a:watchguard:fireware_os::::::::12.0 cpe:2.3:a:watchguard:fireware_os::::::::12.5 cpe:2.3:a:watchguard:fireware_os::::::::2025.1	cpe:2.3:a:watchguard:fireware_os::::::::
References		https://psirt.watchguard.com/CVE-2026-13084

Mon, 06 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 02 Jul 2026 23:30:00 +0000

Type	Values Removed	Values Added
Description		A null pointer dereference vulnerability in WatchGuard Fireware OS may allow a remote unauthenticated attacker to create a denial-of-service (DoS) condition by sending specially crafted IKEv2 messages. This vulnerability affects both the Mobile User VPN with IKEv2 and the Branch Office VPN using IKEv2 when configured with a dynamic gateway peer. This vulnerability affects Fireware OS 11.10.2 up to and including 11.12.4_Update1, 12.0 up to and including 12.12 and 2025.1 up to and including 2026.2
Title		Null Pointer Dereference in WatchGuard Fireware OS iked Process
First Time appeared		Watchguard Watchguard fireware Os
Weaknesses		CWE-476
CPEs		cpe:2.3:a:watchguard:fireware_os::::::::11.10.2 cpe:2.3:a:watchguard:fireware_os::::::::12.0 cpe:2.3:a:watchguard:fireware_os::::::::12.5 cpe:2.3:a:watchguard:fireware_os::::::::2025.1
Vendors & Products		Watchguard Watchguard fireware Os
References		https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00024
Metrics		cvssV4_0 `{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`

Subscriptions

Watchguard Firebox Cloud Firebox M270 Firebox M290 Firebox M295 Firebox M370 Firebox M390 Firebox M395 Firebox M440 Firebox M4600 Firebox M470 Firebox M4800 Firebox M495 Firebox M5600 Firebox M570 Firebox M5800 Firebox M590 Firebox M595 Firebox M670 Firebox M690 Firebox M695 Firebox Nv5 Firebox T115-w Firebox T125 Firebox T125-w Firebox T145 Firebox T145-w Firebox T15 Firebox T185 Firebox T20 Firebox T25 Firebox T35 Firebox T40 Firebox T45 Firebox T55 Firebox T70 Firebox T80 Firebox T85 Fireboxv Fireware Fireware Os

MITRE

Status: PUBLISHED

Assigner: WatchGuard

Published: 2026-07-02T23:06:48.043Z

Updated: 2026-08-27T22:58:26.824Z

Reserved: 2026-06-23T18:29:23.985Z

Link: CVE-2026-13084

Vulnrichment

Updated: 2026-07-06T14:54:44.629Z

NVD

Status : Analyzed

Published: 2026-07-03T00:16:50.767

Modified: 2026-08-28T00:16:46.567

Link: CVE-2026-13084

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-01T21:00:08Z

Weaknesses

CWE-476
NULL Pointer Dereference

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

Exploitation none

Automatable yes

Technical Impact partial

Subscriptions

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