WatchGuard Firebox Race Condition and Use-After-Free in Mobile VPN with IKEv2 LDAP Authentication

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-13368
StatePUBLISHED
AssignerWatchGuard
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-03 00:16:50 UTC
Updated2026-08-14 13:04:59 UTC
DescriptionWatchGuard Fireware OS contains a race condition leading to a use-after-free vulnerability in LDAP authentication for the Mobile User VPN with IKEv2. A remote unauthenticated attacker could exploit this vulnerability to execute arbitrary code in the context of the iked process on Fireboxes that have a Mobile VPN with IKEv2 configured to use an external LDAP authentication server.

Risk And Classification

Primary CVSS: v4.0 9.2 CRITICAL from 5d1c2695-1a31-4499-88ae-e847036fd7e3

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.009240000 probability, percentile 0.571190000 (date 2026-08-11)

Problem Types: CWE-416 | CWE-416 CWE-416

VersionSourceTypeScoreSeverityVector
4.05d1c2695-1a31-4499-88ae-e847036fd7e3Secondary9.2CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNADECLARED9.2CRITICALCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Watchguard Firebox M295 - All All All
Hardware Watchguard Firebox M395 - All All All
Hardware Watchguard Firebox M495 - All All All
Hardware Watchguard Firebox M595 - All All All
Hardware Watchguard Firebox M695 - All All All
Hardware Watchguard Firebox T115-w - All All All
Hardware Watchguard Firebox T125 - All All All
Hardware Watchguard Firebox T125-w - All All All
Hardware Watchguard Firebox T145 - All All All
Hardware Watchguard Firebox T145-w - All All All
Hardware Watchguard Firebox T185 - All All All
Operating System Watchguard Fireware All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA WatchGuard Fireware OS affected 2025.1 2026.2.1 custom Default
CNA WatchGuard Fireware OS unaffected 12.0 12.12.1 custom Default
CNA WatchGuard Fireware OS unaffected 11.10.2 11.12.4+541730 custom Default
CNA WatchGuard Fireware OS affected 12.0 12.5.19 custom T15/T35

References

ReferenceSourceLinkTags
www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00023 5d1c2695-1a31-4499-88ae-e847036fd7e3 www.watchguard.com Vendor Advisory
psirt.watchguard.com/CVE-2026-13368 5d1c2695-1a31-4499-88ae-e847036fd7e3 psirt.watchguard.com Broken Link
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Cody Sixteen (en)

Additional Advisory Data

Solutions

CNA: Fireware OS 2026.2.1, Fireware OS 12.12.1, Fireware OS 12.5.19

Exploits

CNA: WatchGuard is not aware of any exploitation of this vulnerability in the wild.

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