Critical [CVE-2026-76463 +6] Cisco Meraki Security Hardening Release: October 2026
This critical-severity Cisco advisory covers CVE-2026-76463 and CVE-2026-76464 and 5 more CVEs affecting Meraki MV Firmware, Meraki MX Firmware, Meraki MR Wireless Access Points Software.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 7 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.
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Summary
As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams 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 and are not known to be actively exploited.
To assist customers in patching and 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.
Affected products named by the advisory: Meraki MV Firmware; Meraki MX Firmware; Meraki MR Wireless Access Points Software.
- Scope: These vulnerabilities affect the following Cisco products, regardless of device configuration:
- Release 32.2 (first fixed: 32.2.5 (late Oct 2026))
- Release 33.1 (first fixed: 33.1.4 (mid-Nov 2026))
- Release 26.1 (first fixed: 26.1.4)
- Release 30.7 (first fixed: 30.7.3)
- Release 31.1 (first fixed: 31.1.8.1)
- Release 33.1 (first fixed: 33.1.3)
- Release 18.1 (first fixed: 18.1.9 (mid-Oct 2026))
- Release IOS XE 17.15 (first fixed: IOS XE 17.15.6)
- Release IOS XE 17.18 (first fixed: IOS XE 17.18.4.1)
- Release IOS XE 26.1 (first fixed: IOS XE 26.1.2)
- Release 7 (first fixed: 8.0)
- Release 18.1 (first fixed: 18.107.14*)
- Release 19.2 (first fixed: 19.2.9*)
- Release 26.1 (first fixed: 26.1.7)
- Release 26.2 (first fixed: 26.2.3)
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
- 32.2.5 (late Oct 2026)
- 33.1.4 (mid-Nov 2026)
- 26.1.4
- 30.7.3
- 31.1.8.1
- 33.1.3
- 18.1.9 (mid-Oct 2026)
- IOS XE 17.15.6
- IOS XE 17.18.4.1
- IOS XE 26.1.2
- 8.0
- 18.107.14*
- 19.2.9*
- 26.1.7
- 26.2.3
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Mitigation checklist
- Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
- Release 32.2: upgrade to 32.2.5 (late Oct 2026).
- Release 33.1: upgrade to 33.1.4 (mid-Nov 2026).
- Release 26.1: upgrade to 26.1.4.
- Release 30.7: upgrade to 30.7.3.
- Release 31.1: upgrade to 31.1.8.1.
- Release 32.2: upgrade to 32.2.5 (late Oct 2026).
- Release 33.1: upgrade to 33.1.3.
- Release 18.1: upgrade to 18.1.9 (mid-Oct 2026).
- There are no workarounds that address these vulnerabilities.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
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