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    CVE-2020-10136

    IP-in-IP protocol specifies IP Encapsulation within IP standard (RFC 2003, STD 1) that decapsulate and route IP-in-IP traffic is vulnerable to spoofing, access-control bypass and other unexpected behavior due to the lack of validation to verify network packets before decapsulation and routing.

    Published:Jun 2, 2020
    Last Modified:Nov 3, 2025
    EPS:Jun 2, 2020
    EPSS Score:0.14935
    CVSS Score:5.3

    Affected Products

    Vendor
    Cisco
    Product
    Nexus 1000v
    Vendor
    Cisco
    Product
    Nexus 1000ve
    Vendor
    Cisco
    Product
    Nexus 3016
    Vendor
    Cisco
    Product
    Nexus 3048
    Vendor
    Cisco
    Product
    Nexus 3064
    Vendor
    Cisco
    Product
    Nexus 3064-t
    Vendor
    Cisco
    Product
    Nexus 3132q
    Vendor
    Cisco
    Product
    Nexus 3172
    Vendor
    Cisco
    Product
    Nexus 5010
    Vendor
    Cisco
    Product
    Nexus 5020
    Vendor
    Cisco
    Product
    Nexus 5548p
    Vendor
    Cisco
    Product
    Nexus 5548up
    Vendor
    Cisco
    Product
    Nexus 5596t
    Vendor
    Cisco
    Product
    Nexus 5596up
    Vendor
    Cisco
    Product
    Nexus 56128p
    Vendor
    Cisco
    Product
    Nexus 5624q
    Vendor
    Cisco
    Product
    Nexus 5648q
    Vendor
    Cisco
    Product
    Nexus 5672up
    Vendor
    Cisco
    Product
    Nexus 5696q
    Vendor
    Cisco
    Product
    Nexus 6001
    Vendor
    Cisco
    Product
    Nexus 6004
    Vendor
    Cisco
    Product
    Nexus 7000
    Vendor
    Cisco
    Product
    Nexus 7700
    Vendor
    Cisco
    Product
    Nexus 92304qc
    Vendor
    Cisco
    Product
    Nexus 92348gc-x
    Vendor
    Cisco
    Product
    Nexus 9236c
    Vendor
    Cisco
    Product
    Nexus 9272q
    Vendor
    Cisco
    Product
    Nexus 93108tc-ex
    Vendor
    Cisco
    Product
    Nexus 93108tc-fx
    Vendor
    Cisco
    Product
    Nexus 93120tx
    Vendor
    Cisco
    Product
    Nexus 93128tx
    Vendor
    Cisco
    Product
    Nexus 93180lc-ex
    Vendor
    Cisco
    Product
    Nexus 93180yc-ex
    Vendor
    Cisco
    Product
    Nexus 93180yc-fx
    Vendor
    Cisco
    Product
    Nexus 93216tc-fx2
    Vendor
    Cisco
    Product
    Nexus 93240yc-fx2
    Vendor
    Cisco
    Product
    Nexus 9332c
    Vendor
    Cisco
    Product
    Nexus 9332pq
    Vendor
    Cisco
    Product
    Nexus 93360yc-fx2
    Vendor
    Cisco
    Product
    Nexus 9336c-fx2
    Vendor
    Cisco
    Product
    Nexus 9336pq Aci Spine
    Vendor
    Cisco
    Product
    Nexus 9348gc-fxp
    Vendor
    Cisco
    Product
    Nexus 9364c
    Vendor
    Cisco
    Product
    Nexus 9372px
    Vendor
    Cisco
    Product
    Nexus 9372px-e
    Vendor
    Cisco
    Product
    Nexus 9372tx
    Vendor
    Cisco
    Product
    Nexus 9372tx-e
    Vendor
    Cisco
    Product
    Nexus 9396px
    Vendor
    Cisco
    Product
    Nexus 9396tx
    Vendor
    Cisco
    Product
    Nexus 9504
    Vendor
    Cisco
    Product
    Nexus 9508
    Vendor
    Cisco
    Product
    Nexus 9516
    Vendor
    Cisco
    Product
    Nx-os
    Vendor
    Cisco
    Product
    Ucs 6248up
    Vendor
    Cisco
    Product
    Ucs 6296up
    Vendor
    Cisco
    Product
    Ucs 6324
    Vendor
    Cisco
    Product
    Ucs 6332
    Vendor
    Cisco
    Product
    Ucs 6332-16up
    Vendor
    Cisco
    Product
    Ucs Manager
    Vendor
    Cisco
    Product
    Unified Computing System
    Vendor
    Digi
    Product
    Saros
    Vendor
    Hp
    Product
    X3220nr Firmware
    Vendor
    Treck
    Product
    Tcp\/ip

    Exploits

    https://github.com/PapayaJackal/ipeeyoupeewepee

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-116 Excavation
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-169 Footprinting
    CAPEC-19 Embedding Scripts within Scripts
    CAPEC-21 Exploitation of Trusted Identifiers
    CAPEC-22 Exploiting Trust in Client
    CAPEC-224 Fingerprinting
    CAPEC-285 ICMP Echo Request Ping
    CAPEC-287 TCP SYN Scan
    CAPEC-290 Enumerate Mail Exchange (MX) Records
    CAPEC-291 DNS Zone Transfers
    CAPEC-292 Host Discovery
    CAPEC-293 Traceroute Route Enumeration
    CAPEC-294 ICMP Address Mask Request
    CAPEC-295 Timestamp Request
    CAPEC-296 ICMP Information Request
    CAPEC-297 TCP ACK Ping
    CAPEC-298 UDP Ping
    CAPEC-299 TCP SYN Ping
    CAPEC-300 Port Scanning
    CAPEC-301 TCP Connect Scan
    CAPEC-302 TCP FIN Scan
    CAPEC-303 TCP Xmas Scan
    CAPEC-304 TCP Null Scan
    CAPEC-305 TCP ACK Scan
    CAPEC-306 TCP Window Scan
    CAPEC-307 TCP RPC Scan
    CAPEC-308 UDP Scan
    CAPEC-309 Network Topology Mapping
    CAPEC-310 Scanning for Vulnerable Software
    CAPEC-312 Active OS Fingerprinting
    CAPEC-313 Passive OS Fingerprinting
    CAPEC-317 IP ID Sequencing Probe
    CAPEC-318 IP 'ID' Echoed Byte-Order Probe
    CAPEC-319 IP (DF) 'Don't Fragment Bit' Echoing Probe
    CAPEC-320 TCP Timestamp Probe
    CAPEC-321 TCP Sequence Number Probe
    CAPEC-322 TCP (ISN) Greatest Common Divisor Probe
    CAPEC-323 TCP (ISN) Counter Rate Probe
    CAPEC-324 TCP (ISN) Sequence Predictability Probe
    CAPEC-325 TCP Congestion Control Flag (ECN) Probe
    CAPEC-326 TCP Initial Window Size Probe
    CAPEC-327 TCP Options Probe
    CAPEC-328 TCP 'RST' Flag Checksum Probe
    CAPEC-329 ICMP Error Message Quoting Probe
    CAPEC-330 ICMP Error Message Echoing Integrity Probe
    CAPEC-441 Malicious Logic Insertion
    CAPEC-459 Creating a Rogue Certification Authority Certificate
    CAPEC-461 Web Services API Signature Forgery Leveraging Hash Function Extension Weakness
    CAPEC-472 Browser Fingerprinting
    CAPEC-473 Signature Spoof
    CAPEC-476 Signature Spoofing by Misrepresentation
    CAPEC-478 Modification of Windows Service Configuration
    CAPEC-479 Malicious Root Certificate
    CAPEC-497 File Discovery
    CAPEC-502 Intent Spoof
    CAPEC-503 WebView Exposure
    CAPEC-508 Shoulder Surfing
    CAPEC-536 Data Injected During Configuration
    CAPEC-546 Incomplete Data Deletion in a Multi-Tenant Environment
    CAPEC-550 Install New Service
    CAPEC-551 Modify Existing Service
    CAPEC-552 Install Rootkit
    CAPEC-556 Replace File Extension Handlers
    CAPEC-558 Replace Trusted Executable
    CAPEC-562 Modify Shared File
    CAPEC-563 Add Malicious File to Shared Webroot
    CAPEC-564 Run Software at Logon
    CAPEC-573 Process Footprinting
    CAPEC-574 Services Footprinting
    CAPEC-575 Account Footprinting
    CAPEC-576 Group Permission Footprinting
    CAPEC-577 Owner Footprinting
    CAPEC-578 Disable Security Software
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-616 Establish Rogue Location
    CAPEC-643 Identify Shared Files/Directories on System
    CAPEC-646 Peripheral Footprinting
    CAPEC-651 Eavesdropping
    CAPEC-667 Bluetooth Impersonation AttackS (BIAS)
    CAPEC-79 Using Slashes in Alternate Encoding
    CAPEC-94 Adversary in the Middle (AiTM)

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High