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TI-2026-29892 Aliases CVE-2026-41286GHSA-hgvw-h399-c9rx

Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant B

Priority LOW 31CWE-121Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Stack-based Buffer Overflow vulnerability in the WatchGuard Agent discovery service on Windows allows Overflow Buffers. An unauthenticated attacker on the same local network could exploit this vulnerability to crash the agent service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00252 16th percentileScored 2026-11-07
Fix Fixed WatchGuard Agent (WatchGuard): 1.25.03.0000

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
WatchGuardWatchGuard Agent1.0.0.0 to before 1.25.03.00001.25.03.0000Patch availableCNA
  • WatchGuard Agent VendorWatchGuard Affected 1.0.0.0 to before 1.25.03.0000 Fixed in 1.25.03.0000 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:watchguard:agent:*:*:*:*:*:windows:*:*before 1.25.03.0000VulnerableWatchGuard
  • cpe:2.3:a:watchguard:agent:*:*:*:*:*:windows:*:* Versions before 1.25.03.0000 Vulnerable ·WatchGuard

Remediation

  • Fix · CNA WatchGuard Agent (WatchGuard) Fixed in 1.25.03.0000

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    WatchGuard Agent 1.25.03.0000

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-29894 WatchGuard Agent on Windows Privilege Escalation VulnerabilityPriority LOW 33
    • TI-2026-29893 Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant APriority LOW 31
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41286
  2. 2026-10-03 Alias added: GHSA-hgvw-h399-c9rx

References

Advisory 2

  • TI-2026-05953 Uncontrolled search path in PluginLauncher allows SYSTEM code execution in WatchGuard Agent CVSS 4.0HIGH 8.5
  • TI-2026-05952 Usage of a hard-coded cryptographic key in WatchGuard Agent allows inclusion of code into existing process CVSS 4.0HIGH 8.5
  • TI-2026-29894 WatchGuard Agent on Windows Privilege Escalation Vulnerability CVSS 4.0HIGH 7.3
  • TI-2026-29893 Stack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant A CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences