EUVD-2026-67334
GHSA-c7m7-329m-9vph
Severity by source
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/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
Unauthenticated network-reachable service (AV:N/PR:N/UI:N) with a low-complexity stack overflow yielding full code execution, so C/I/A all High; scope unchanged.
Primary rating from Vendor (WatchGuard).
CVSS VectorVendor: WatchGuard
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/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
Lifecycle Timeline
3DescriptionCVE.org
A stack-based buffer overflow in the epm (Endpoint Protection Manager) service used by the deprecated Mobile Security feature in WatchGuard Fireware OS allows an unauthenticated remote attacker to execute arbitrary code.
AnalysisAI
Remote code execution in WatchGuard Fireware OS affects the epm (Endpoint Protection Manager) service tied to the deprecated Mobile Security feature, where a stack-based buffer overflow lets an unauthenticated remote attacker run arbitrary code on the appliance. The CVSS 4.0 base score is 9.3 (critical) with a network, no-privilege, no-interaction vector. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the deprecated Mobile Security feature (and its epm / Endpoint Protection Manager service) be present and reachable on the target Fireware OS appliance - that is the concrete gating prerequisite. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | All strong signals point to high priority: the CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) describes unauthenticated, low-complexity, network-reachable exploitation with full high impact to confidentiality, integrity, and availability (VC:H/VI:H/VA:H), scoring 9.3. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Patch available per vendor advisory: apply the fixed Fireware OS release published by WatchGuard in the PSIRT advisory at https://psirt.watchguard.com/CVE-2026-13086 (the input does not include an exact fix version, so confirm the target build in that advisory before upgrading). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: inventory all WatchGuard appliances and identify those with Mobile Security (epm service) enabled, noting network position and criticality. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Watchguard
View allWatchGuard Fireware OS contains an out-of-bounds write in IKEv2 VPN handling enabling unauthenticated remote code execut
Watchguard XCS 9.2 and 10.0 before build 150522 allow remote authenticated users to execute arbitrary commands via shell
Remote code execution in WatchGuard Fireware OS arises from an out-of-bounds write in the iked (IKE) daemon, letting an
SQL injection vulnerability in Watchguard XCS 9.2 and 10.0 before build 150522 allows remote attackers to execute arbitr
On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786. Rated criti
An issue was discovered on WatchGuard AP100, AP102, and AP200 devices with firmware before 1.2.9.15. Rated critical seve
An issue was discovered on WatchGuard AP100, AP102, and AP200 devices with firmware before 1.2.9.15, and AP300 devices w
WatchGuard RapidStream appliances allow local users to gain privileges and execute arbitrary commands via a crafted ifco
An issue was discovered on WatchGuard AP100, AP102, and AP200 devices with firmware before 1.2.9.15. Rated high severity
An FBX-5312 issue was discovered in WatchGuard Fireware before 12.0. Rated high severity (CVSS 7.5), this vulnerability
WatchGuard Fireware v11.12.1 and earlier mishandles requests referring to an XML External Entity (XXE), in the XML-RPC a
WatchGuard Firebox and XTM appliances allow an unauthenticated remote attacker to retrieve sensitive authentication serv
Same weakness CWE-121 – Stack-based Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today