Advisoriesby IbisCiscoCVE-2026-76457
Cisco NX-OS Software: out-of-bounds read
No fix yet
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS 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-2026-76457 are related to out-of-bounds read issues that are grouped under the Common Weakness Enumeration (CWE) CWE-125.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Cisco NX-OS Software Product | <= 8.2(5) | No fix yet |
| <= 7.3(5)D1(1) | No fix yet | |
| <= 8.4(2) | No fix yet | |
| <= 8.4(3) | No fix yet | |
| Cisco NX-OS System Software in ACI Mode Product | <= 15.2(1g) | No fix yet |
| <= 15.2(2e) | No fix yet | |
| <= 15.2(2f) | No fix yet | |
| <= 15.2(2g) | No fix yet | |
| Cisco Unified Computing System (Managed) Product | <= 4.0(1a) | No fix yet |
| <= 4.1(1d) | No fix yet | |
| <= 4.0(4f) | No fix yet | |
| <= 4.0(4c) | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-125