Improper access control in Cisco Meraki and Campus Gateway software
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.
Summary
Multiple internally discovered improper access control flaws, grouped under CWE-284, affect Cisco Campus Gateway Software and Cisco Meraki MR, MV and MX firmware. An adjacent network attacker without privileges and without user interaction can impact confidentiality, integrity and availability, with a high impact on confidentiality. Cisco addressed the flaws in a security hardening release published 2026-10-07, but the sources list no fixed version.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76463 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Campus Gateway Software | CG 33.1.3 | — | No fix listed | CNA |
| Cisco | Cisco Meraki MR Wireless Access Points Software | MR 33.1.2; MR 30.6; MR 32.1.7; MR 32.2.3; MR 32.2.4; MR 33.1.1 | — | No fix listed | CNA |
| Cisco | Cisco Meraki MV Firmware | 4.20; 5.0; 5.1; 5.2; 5.3; 5.4; 5.4.1; 5.5; 5.5.1; 5.6; 5.6.1; 6.0; 6.0.1; 5.6.2; 6.0.2; 6.1; 6.1.1; 6.1.2; 6.2; 6.2.1; 6.2.2; 6.3; 6.3.2; 2.0; 2.1; 2.2; 3.0; 3.1; 3.2; 3.3; 3.4; 3.5; 3.6; 3.7; 3.8; 3.9; 3.10; 3.11; 3.12; 3.13; 3.14; 3.15; 3.16; 3.17; 3.18; 3.19; 3.20; 3.21; 3.22; 3.23; 3.24; 3.25; 3.26; 3.27; 3.28; 3.29; 3.30; 3.31; 3.32; 3.33; 3.34; 3.35; 3.36; 4.0; 4.1; 4.2; 4.3; 4.4; 4.5; 4.6; 4.7; 4.8; 4.9; 4.10; 4.11; 4.12; 4.13; 4.14; 4.15; 4.16; 4.17; 4.18; 4.18.1; 4.19; MV 7.3; MV 7.3.1; MV 7.3.2; MV 7.2.1; MV 7.2.2 | — | No fix listed | CNA |
| Cisco | Cisco Meraki MX Firmware | 16.2; 16.3; 16.4; 16.5; 16.6; 17.3; 17.6; 17.7; 17.8; 17.9; 17.10; 18.1; 18.2; 19.1; MX 18.211.2; MX 26.2.1; MX 19.2.8; MX 26.2.2; MX 26.1.4; MX 26.1.5; MX 26.1.6 | — | No fix listed | CNA |
- Cisco Campus Gateway Software VendorCisco Affected CG 33.1.3 Fixed in — No fix listed CNA
- Cisco Meraki MR Wireless Access Points Software VendorCisco Affected MR 33.1.2; MR 30.6; MR 32.1.7; MR 32.2.3; MR 32.2.4; MR 33.1.1 Fixed in — No fix listed CNA
- Cisco Meraki MV Firmware VendorCisco Affected 4.20; 5.0; 5.1; 5.2; 5.3; 5.4; 5.4.1; 5.5; 5.5.1; 5.6; 5.6.1; 6.0; 6.0.1; 5.6.2; 6.0.2; 6.1; 6.1.1; 6.1.2; 6.2; 6.2.1; 6.2.2; 6.3; 6.3.2; 2.0; 2.1; 2.2; 3.0; 3.1; 3.2; 3.3; 3.4; 3.5; 3.6; 3.7; 3.8; 3.9; 3.10; 3.11; 3.12; 3.13; 3.14; 3.15; 3.16; 3.17; 3.18; 3.19; 3.20; 3.21; 3.22; 3.23; 3.24; 3.25; 3.26; 3.27; 3.28; 3.29; 3.30; 3.31; 3.32; 3.33; 3.34; 3.35; 3.36; 4.0; 4.1; 4.2; 4.3; 4.4; 4.5; 4.6; 4.7; 4.8; 4.9; 4.10; 4.11; 4.12; 4.13; 4.14; 4.15; 4.16; 4.17; 4.18; 4.18.1; 4.19; MV 7.3; MV 7.3.1; MV 7.3.2; MV 7.2.1; MV 7.2.2 Fixed in — No fix listed CNA
- Cisco Meraki MX Firmware VendorCisco Affected 16.2; 16.3; 16.4; 16.5; 16.6; 17.3; 17.6; 17.7; 17.8; 17.9; 17.10; 18.1; 18.2; 19.1; MX 18.211.2; MX 26.2.1; MX 19.2.8; MX 26.2.2; MX 26.1.4; MX 26.1.5; MX 26.1.6 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for Cisco Campus Gateway Software, Cisco Meraki MR Wireless Access Points Software, Cisco Meraki MV Firmware or Cisco Meraki MX Firmware.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-07 Threatist record created from CVE-2026-76463
- 2026-10-07 Alias added: GHSA-jfm4-3jqp-3352
- 2026-10-07 CISA SSVC decision points changed
- 2026-10-07 Priority changed: MEDIUM → LOW
References
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Sources
- CVE-2026-76463 · CVE Program
- CVE-2026-76463 · NVD
- FIRST EPSS
- GHSA-jfm4-3jqp-3352 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences