Vulnerabilities in Node.js and Brotli Affecting Cisco Products: October 2026
cisco-sa-oct2026-node-js-Jj3SQ19u
Summary
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, Cisco Secure Firewall Threat Defense (FTD) Software and Cisco Secure Firewall Management Center (FMC) Software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.
These vulnerabilities were found during internal testing. Two of them are known to be actively exploited. For more information, see the following advisories: Cisco Secure Firewall Management Center Software Static Credential Vulnerability and Cisco Secure Firewall Management Center Software Authentication Bypass Vulnerability.
To assist customers in patching and to streamline the disclosure process, Cisco has grouped these issues by their underlying vulnerability class — Common Weakness Enumeration (CWE) — and assigned a single Common Vulnerabilities and Exposures Identifier (CVE ID) to each CWE grouping.
Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.
This advisory is part of a group of advisories. For a complete list of the advisories and links to them, see Cisco Advance Notification for Publication of September 16, 2026, Security Advisories.
Products covered
Secure Firewall ASA Software
Secure FTD Software
Secure FMC Software
Remediation
There are no workarounds that address these vulnerabilities.
To remediate these vulnerabilities and avoid future exposure as described in this advisory, Cisco strongly recommends that customers upgrade to the fixed software indicated in this advisory.
Fixed Releases
In the following table, the left column lists Cisco software releases. The center column lists hot fixes that are affected by the vulnerabilities that are described in this advisory, and the right column indicates the first software release that includes the fix for these vulnerabilities. Customers who installed one of the listed hot fix releases must install the listed first fixed release.
Cisco Secure Firewall ASA Software Release | Affected Hot Fix Release | First Fixed Release |
|---|---|---|
9.16 and earlier | N/A | 9.16.4.103 |
9.18 | 9.18.4.135 | 9.18.4.94 |
9.20 | 9.20.4.235 | 9.20.4.49 |
9.22 | 9.22.3.191 | 9.22.3.26 |
9.23 | 9.23.1.195 9.23.1.211 | 9.23.1.47 |
9.24 | 9.24.1.155 9.24.1.221 | 9.24.1.26 |
In the following table, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerabilities that are described in this advisory and the first release that includes the fix for these vulnerabilities.
Cisco Secure FTD Software Release and Secure FMC Software Release | First Fixed Release |
|---|---|
7.0 and earlier | 7.0.10 |
7.2 | 7.2.12 |
7.4 | 7.4.8 |
7.6 | 7.6.6 |
7.7 | 7.7.13 |
10.0 | 10.0.2 |
10.1 | 10.1.0 |
Cisco strongly recommends that customers upgrade to the first fixed releases in the preceding tables because they include fixes for multiple vulnerabilities. For more information, see Cisco Secure Firewall Adaptive Security Appliance, Secure Firewall Threat Defense, and Secure Firewall Management Center Software Hardening Release: September 2026.
The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory.
CVEs in this advisory 8
Update history
What changed in later vendor updates
SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.
- Added affected products: Secure Firewall ASA Software, Secure FMC Software, Secure FTD Software.
- Removed affected products: Cisco Secure Firewall Adaptive Security Appliance, Secure Firewall Threat Defense, and Secure Firewall Management Center Software Hardening Release: September 2026.
- The vendor changed the advisory summary.
- The vendor changed the advisory's last-updated date.
Updates
- Added to SecurityAlert
We collected the advisory from the official source.
- Published by Cisco
The publication date reported by the vendor.
- Confirmed at the source
Our collector saw this advisory during a later source check.