Multiple Cisco Products Unauthenticated Remote Code Execution in Erlang/OTP SSH Server: April 2025

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Updated:June 11, 2025
Document ID:1745360245562120

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Cisco Security Advisory

Multiple Cisco Products Unauthenticated Remote Code Execution in Erlang/OTP SSH Server: April 2025

Critical
Advisory ID:
cisco-sa-erlang-otp-ssh-xyZZy
First Published:
2025 April 22 21:45 GMT
Last Updated: 
2025 June 11 14:40 GMT
Version 1.11:
Final
Workarounds:
No workarounds available
CVE-2025-32433
CWE-306
CVSS Score:
Base 10.0Click Icon to Copy Verbose Score
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:X
CVE-2025-32433
CWE-306

Summary

Affected Products

  • Cisco has investigated its product lines that include Erlang/OTP to determine which products may be affected by this vulnerability.

    This advisory lists only Cisco products and services that are known to include the impacted software component and thus may be vulnerable. Products and services that do not contain the impacted software component are not vulnerable and therefore are not listed in this advisory. Any Cisco product or service that is not explicitly listed in the Affected Products section of this advisory is not affected by the vulnerability or vulnerabilities described.

    The Vulnerable Products section includes Cisco bug IDs for each affected product. The bugs are accessible through the Cisco Bug Search Tool and contain additional platform-specific information, including workarounds (if available) and fixed software releases.

    Vulnerable Products

    The following table lists Cisco products that are affected by the vulnerability that is described in this advisory. If a future release date is indicated for software, the date provided represents an estimate based on all information known to Cisco as of the Last Updated date at the top of the advisory. Availability dates are subject to change based on a number of factors, including satisfactory testing results and delivery of other priority features and fixes. Customers should refer to the associated Cisco bug(s) for further details.

    Cisco Product Cisco Bug ID Fixed Release Available
    Network Application, Service, and Acceleration
    ConfD, ConfD Basic1 CSCwo83759 7.7.19.1
    8.0.17.1
    8.1.16.2
    8.2.11.1
    8.3.8.1
    8.4.4.1
    Network Management and Provisioning
    Network Services Orchestrator (NSO)1 CSCwo83796 5.7.19.1
    6.1.16.2
    6.2.11.1
    6.3.8.1
    6.4.1.1
    6.4.4.1
    Smart PHY1 CSCwo83751 25.2 (Sep 2025)
    Ultra Services Platform1 CSCwo83750 No fix planned.
    Routing and Switching - Enterprise and Service Provider
    ASR 5000 Series Software (StarOS) and Ultra Packet Core1 CSCwo83806 2025.03 (Jul 2025)
    Cloud Native Broadband Network Gateway1 CSCwo83769 2025.03.1 (Aug 2025)
    iNode Manager CSCwo83755 No fix planned.2
    Optical Site Manager for Network Convergence System (NCS) 1000 Series1 CSCwo83800 25.2.1 (Jun 2025)
    25.3.1 (Sep 2025)
    Shelf Virtualization Orchestrator Module for NCS 2000 Series1 CSCwo83774 25.1.1 (Jun 2025)
    Ultra Cloud Core - Access and Mobility Management Function1 CSCwo83785 2025.03.1 (Aug 2025)
    Ultra Cloud Core - Policy Control Function1 CSCwo83789 2025.03.1 (Aug 2025)
    Ultra Cloud Core - Redundancy Configuration Manager1 CSCwo83753 2025.03.1 (Aug 2025)
    Ultra Cloud Core - Session Management Function1 CSCwo83775 2025.03.1 (Aug 2025)
    Ultra Cloud Core - Subscriber Microservices Infrastructure1 CSCwo83747 2025.03.1 (Aug 2025)
    Unified Computing
    Enterprise NFV Infrastructure Software (NFVIS)1 CSCwo83758 4.18 (Aug 2025)
    Routing and Switching - Small Business
    Small Business RV Series Routers RV160, RV160W, RV260, RV260P, RV260W, RV340, RV340W, RV345, RV345P  CSCwo83803 
    CSCwo83767    		 No fix planned.3
    1. While these products are vulnerable because they accept unauthenticated channel request messages, due to the product configuration they are not vulnerable to RCE.
     

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. 

    Cisco has confirmed that this vulnerability does not affect the following Cisco products:

    Network and Content Security Devices
    FXOS Software
    Identity Services Engine (ISE)
    Secure Adaptive Security Appliance (ASA) Software
    Secure Firewall Management Center (FMC) Software
    Secure Firewall Threat Defense (FTD) Software
    Secure Network Analytics (SNA)
    Network Application, Service, and Acceleration
    Automated Fault Management
    Wide Area Application Services (WAAS) Software
    Network Management and Provisioning
    Application Policy Infrastructure Controller (APIC)
    Crosswork Hierarchical Controller
    Cyber Vision
    Elastic Services Controller
    Evolved Programmable Network Manager (EPNM)
    FindIT Network Management Software
    Policy Suite
    Provider Connectivity Assurance
    Virtual Topology System
    Virtualized Infrastructure Manager
    WAE Automation
    Routing and Switching - Enterprise and Service Provider
    Catalyst Center
    Catalyst SD-WAN Manager
    Catalyst SD-WAN
    Intelligent Node Software
    IOS Software
    IOS XE Software
    IOS XR Software
    Meraki Products
    NX-OS Software
    Routing and Switching - Small Business
    Business Dashboard
    Video, Streaming, TelePresence, and Transcoding Devices
    Expressway and TelePresence Video Communication Server (VCS)
     

Workarounds

  • Any workarounds will be documented in the product-specific Cisco bugs, which are identified in the Vulnerable Products section of this advisory.

Fixed Software

  • For information about fixed software releases, consult the Cisco bugs identified in the Vulnerable Products section of this advisory.

    When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

Exploitation and Public Announcements

  • In June 2025, the Cisco Product Security Incident Response Team (PSIRT) became aware of attempted exploitation of this vulnerability in the wild. Cisco continues to strongly recommend that customers upgrade to a fixed software release to remediate this vulnerability.

Source

  • This vulnerability was reported publicly through the Erlang/OTP Github Issues Tracker.

Cisco Security Vulnerability Policy

  • To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

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Revision History

  • Version Description Section Status Date
    1.11 Vulnerability added to CISA KEV. Exploitation and Public Announcements Final 2025-JUN-11
    1.10 Updated product lists and statuses. Changed the advisory status to Final. Header and Vulnerable Products Final 2025-JUN-10
    1.9 Updated product lists and statuses. Vulnerable Products Interim 2025-MAY-30
    1.8 Updated product lists and statuses. Vulnerable Products Interim 2025-MAY-28
    1.7 Updated product lists and statuses. Vulnerable Products Interim 2025-MAY-07
    1.6 Updated product lists and statuses. Vulnerable Products Interim 2025-APR-30
    1.5 Updated product lists and statuses. Affected Products, Vulnerable Products, Products Confirmed Not Vulnerable Interim 2025-APR-29
    1.4 Updated product lists and statuses. Vulnerable Products Interim 2025-APR-28
    1.3 Updated product lists and statuses. Products Under Investigation, Vulnerable Products, Products Confirmed Not Vulnerable Interim 2025-APR-25
    1.2 Updated product lists and statuses. Products Under Investigation, Vulnerable Products, Products Confirmed Not Vulnerable Interim 2025-APR-24
    1.1 Updated product lists and statuses. Products Under Investigation, Vulnerable Products, Products Confirmed Not Vulnerable Interim 2025-APR-23
    1.0 Initial public release. — Interim 2025-APR-22
    Show Less

Cisco Security Vulnerability Policy

  • To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Subscribe to Cisco Security Notifications

Action Links for This Advisory

Related to This Advisory