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Watchguard CVE-2017-8056

MEDIUM
Improper Restriction of XML External Entity Reference (CWE-611)
2017-04-22 cve@mitre.org
5.3
CVSS 3.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A02:2025 - Security Misconfiguration
ASVS 5.0
V13 - Configuration XML external entity prevention
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Collection

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 5.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 11.38%.

Exploit ScenarioDerived

A remote attacker could read arbitrary files or perform SSRF through XML processing by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 11.4% exploitation probability (EPSS)

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AnalysisAI

WatchGuard Fireware v11.12.1 and earlier mishandles requests referring to an XML External Entity (XXE), in the XML-RPC agent. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 11.4%.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Disable external entity processing in XML parsers, use JSON instead of XML where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as XML External Entity (XXE) (CWE-611), which allows attackers to read arbitrary files or perform SSRF through XML processing. WatchGuard Fireware v11.12.1 and earlier mishandles requests referring to an XML External Entity (XXE), in the XML-RPC agent. This causes the Firebox wgagent process to crash. This process crash ends all authenticated sessions to the Firebox, including management connections, and prevents new authenticated sessions until the process has recovered. The Firebox may also experience an overall degradation in performance while the wgagent process recovers. An attacker could continuously send XML-RPC requests that contain references to external entities to perform a limited Denial of Service (DoS) attack against an affected Firebox. Affected products include: Watchguard Fireware.

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Severity by source

NVD PRIMARY 5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

WatchGuard Fireware v11.12.1 and earlier mishandles requests referring to an XML External Entity (XXE), in the XML-RPC agent. This causes the Firebox wgagent process to crash. This process crash ends all authenticated sessions to the Firebox, including management connections, and prevents new authenticated sessions until the process has recovered. The Firebox may also experience an overall degradation in performance while the wgagent process recovers. An attacker could continuously send XML-RPC requests that contain references to external entities to perform a limited Denial of Service (DoS) attack against an affected Firebox.

Threat Intelligence Overview

EPSS Score
11.4%
Top 6% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 11.4%
Patch available No
Active threat Yes
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

57
Low Medium High Critical
KEV: 0
EPSS: +11
CVSS: +26
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

XML External Entity (XXE) attacks exploit XML parsers that process Document Type Definitions (DTDs) without proper restrictions.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*
CVE-2025-9242 CRITICAL POC
9.3 Sep 17

WatchGuard Fireware OS contains an out-of-bounds write in IKEv2 VPN handling enabling unauthenticated remote code execut

CVE-2015-5453 MEDIUM POC
6.5 Jul 08

Watchguard XCS 9.2 and 10.0 before build 150522 allow remote authenticated users to execute arbitrary commands via shell

CVE-2013-6021 CRITICAL POC
9.3 Oct 19

Buffer overflow in WGagent in WatchGuard WSM and Fireware before 11.8 allows remote attackers to execute arbitrary code

CVE-2025-14733 CRITICAL
9.3 Dec 19

Remote code execution in WatchGuard Fireware OS arises from an out-of-bounds write in the iked (IKE) daemon, letting an

CVE-2015-5452 HIGH POC
7.5 Jul 08

SQL injection vulnerability in Watchguard XCS 9.2 and 10.0 before build 150522 allows remote attackers to execute arbitr

CVE-2022-26318 CRITICAL POC
9.8 Mar 04

On WatchGuard Firebox and XTM appliances, an unauthenticated user can execute arbitrary code, aka FBX-22786. Rated criti

CVE-2018-10575 CRITICAL POC
9.8 Apr 30

An issue was discovered on WatchGuard AP100, AP102, and AP200 devices with firmware before 1.2.9.15. Rated critical seve

CVE-2015-2878 HIGH POC
8.8 Oct 23

Multiple cross-site request forgery (CSRF) vulnerabilities in Hexis HawkEye G 3.0.1.4912 allow remote attackers to hijac

CVE-2018-10577 HIGH POC
8.8 May 02

An issue was discovered on WatchGuard AP100, AP102, and AP200 devices with firmware before 1.2.9.15, and AP300 devices w

CVE-2016-7089 HIGH POC
7.8 Aug 24

WatchGuard RapidStream appliances allow local users to gain privileges and execute arbitrary commands via a crafted ifco

CVE-2016-3943 HIGH POC
7.8 Apr 18

Panda Endpoint Administration Agent before 7.50.00, as used in Panda Security for Business products for Windows, uses a

CVE-2015-7378 HIGH POC
7.8 Apr 18

Panda Security URL Filtering before 4.3.1.9 uses a weak ACL for the "Panda Security URL Filtering" directory and install

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