Multiple Cisco Products Unauthenticated Remote Code Execution in Erlang/OTP SSH Server: April 2025
Summary
Affected Products
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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.
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.
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
Fixed Software
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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
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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
Cisco Security Vulnerability Policy
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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.
Action Links for This Advisory
Related to This Advisory
URL
Revision History
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| 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 |
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