CVE-2026-76459
Received
Received - Intake
Out-of-Bounds Write in Cisco NX-OS
Vulnerability report for CVE-2026-76459, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-07
Last updated on: 2026-10-07
Assigner: Cisco Systems, Inc.
Description
Description
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-2026-76459 are related to out-of-bounds write issues that are grouped under the Common Weakness Enumeration (CWE) CWE-787.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Cisco | Cisco | NX-OS Software 8.2(5) |
| Cisco | Cisco | NX-OS Software 7.3(5)D1(1) |
| Cisco | Cisco | NX-OS Software 8.4(2) |
| Cisco | Cisco | NX-OS Software 8.4(3) |
| Cisco | Cisco | NX-OS Software 9.2(3) |
| Cisco | Cisco | NX-OS Software 8.2(1) |
| Cisco | Cisco | NX-OS Software 7.3(1)D1(1) |
| Cisco | Cisco | NX-OS Software 9.2(2v) |
| Cisco | Cisco | NX-OS Software 7.3(0)D1(1) |
| Cisco | Cisco | NX-OS Software 7.3(4)D1(1) |
| Cisco | Cisco | NX-OS Software 9.2(1) |
| Cisco | Cisco | NX-OS Software 9.2(2t) |
| Cisco | Cisco | NX-OS Software 9.2(3y) |
| Cisco | Cisco | NX-OS Software 9.3(2) |
| Cisco | Cisco | NX-OS Software 7.3(1)DY(1) |
| Cisco | Cisco | NX-OS Software 8.1(1) |
| Cisco | Cisco | NX-OS Software 8.2(2) |
| Cisco | Cisco | NX-OS Software 8.3(2) |
| Cisco | Cisco | NX-OS Software 7.3(2)D1(3a) |
| Cisco | Cisco | NX-OS Software 9.2(4) |
| Cisco | Cisco | NX-OS Software 8.1(2) |
| Cisco | Cisco | NX-OS Software 7.3(3)D1(1) |
| Cisco | Cisco | NX-OS Software 8.2(3) |
| Cisco | Cisco | NX-OS Software 8.3(1) |
| Cisco | Cisco | NX-OS Software 8.4(1) |
| Cisco | Cisco | NX-OS Software 8.1(1b) |
| Cisco | Cisco | NX-OS Software 7.3(0)DX(1) |
| Cisco | Cisco | NX-OS Software 7.3(2)D1(1) |
| Cisco | Cisco | NX-OS Software 9.3(1) |
| Cisco | Cisco | NX-OS Software 7.3(2)D1(2) |
| Cisco | Cisco | NX-OS Software 8.2(4) |
| Cisco | Cisco | NX-OS Software 7.3(0)DY(1) |
| Cisco | Cisco | NX-OS Software 9.3(1z) |
| Cisco | Cisco | NX-OS Software 9.2(2) |
| Cisco | Cisco | NX-OS Software 8.1(2a) |
| Cisco | Cisco | NX-OS Software 7.3(2)D1(3) |
| Cisco | Cisco | NX-OS Software 8.1(1a) |
| Cisco | Cisco | NX-OS Software 8.4(1a) |
| Cisco | Cisco | NX-OS Software 9.3(3) |
| Cisco | Cisco | NX-OS Software 7.3(2)D1(1d) |
| Cisco | Cisco | NX-OS Software 9.3(4) |
| Cisco | Cisco | NX-OS Software 7.3(6)D1(1) |
| Cisco | Cisco | NX-OS Software 8.2(6) |
| Cisco | Cisco | NX-OS Software 9.3(5) |
| Cisco | Cisco | NX-OS Software 8.4(2a) |
| Cisco | Cisco | NX-OS Software 8.4(2b) |
| Cisco | Cisco | NX-OS Software 8.5(1) |
| Cisco | Cisco | NX-OS Software 9.3(6) |
| Cisco | Cisco | NX-OS Software 8.4(4) |
| Cisco | Cisco | NX-OS Software 7.3(7)D1(1) |
| Cisco | Cisco | NX-OS Software 8.4(2c) |
| Cisco | Cisco | NX-OS Software 9.3(5w) |
| Cisco | Cisco | NX-OS Software 8.2(7) |
| Cisco | Cisco | NX-OS Software 9.3(7) |
| Cisco | Cisco | NX-OS Software 9.3(7k) |
| Cisco | Cisco | NX-OS Software 7.3(8)D1(1) |
| Cisco | Cisco | NX-OS Software 9.3(7a) |
| Cisco | Cisco | NX-OS Software 8.2(7a) |
| Cisco | Cisco | NX-OS Software 9.3(8) |
| Cisco | Cisco | NX-OS Software 8.4(4a) |
| Cisco | Cisco | NX-OS Software 8.4(2d) |
| Cisco | Cisco | NX-OS Software 8.4(5) |
| Cisco | Cisco | NX-OS Software 8.2(8) |
| Cisco | Cisco | NX-OS Software 9.3(9) |
| Cisco | Cisco | NX-OS Software 7.3(9)D1(1) |
| Cisco | Cisco | NX-OS Software 8.4(6) |
| Cisco | Cisco | NX-OS Software 8.4(2e) |
| Cisco | Cisco | NX-OS Software 9.3(10) |
| Cisco | Cisco | NX-OS Software 9.2(1a) |
| Cisco | Cisco | NX-OS Software 8.2(9) |
| Cisco | Cisco | NX-OS Software 10.3(1) |
| Cisco | Cisco | NX-OS Software 8.4(7) |
| Cisco | Cisco | NX-OS Software 10.3(2) |
| Cisco | Cisco | NX-OS Software 8.4(6a) |
| Cisco | Cisco | NX-OS Software 9.3(11) |
| Cisco | Cisco | NX-OS Software 10.3(3) |
| Cisco | Cisco | NX-OS Software 9.4(1) |
| Cisco | Cisco | NX-OS Software 9.3(2a) |
| Cisco | Cisco | NX-OS Software 8.4(2f) |
| Cisco | Cisco | NX-OS Software 8.2(10) |
| Cisco | Cisco | NX-OS Software 9.3(12) |
| Cisco | Cisco | NX-OS Software 10.4(1) |
| Cisco | Cisco | NX-OS Software 8.4(8) |
| Cisco | Cisco | NX-OS Software 10.3(99w) |
| Cisco | Cisco | NX-OS Software 10.3(3w) |
| Cisco | Cisco | NX-OS Software 10.3(99x) |
| Cisco | Cisco | NX-OS Software 10.3(3o) |
| Cisco | Cisco | NX-OS Software 8.4(9) |
| Cisco | Cisco | NX-OS Software 10.3(4) |
| Cisco | Cisco | NX-OS Software 10.3(3p) |
| Cisco | Cisco | NX-OS Software 10.3(4a) |
| Cisco | Cisco | NX-OS Software 9.4(1a) |
| Cisco | Cisco | NX-OS Software 10.4(2) |
| Cisco | Cisco | NX-OS Software 10.3(3q) |
| Cisco | Cisco | NX-OS Software 9.3(13) |
| Cisco | Cisco | NX-OS Software 8.2(11) |
| Cisco | Cisco | NX-OS Software 9.4(2) |
| Cisco | Cisco | NX-OS Software 10.3(5) |
| Cisco | Cisco | NX-OS Software 10.4(3) |
| Cisco | Cisco | NX-OS Software 10.3(3x) |
| Cisco | Cisco | NX-OS Software 10.3(4g) |
| Cisco | Cisco | NX-OS Software 10.5(1) |
| Cisco | Cisco | NX-OS Software 8.4(10) |
| Cisco | Cisco | NX-OS Software 9.4(2a) |
| Cisco | Cisco | NX-OS Software 10.3(3r) |
| Cisco | Cisco | NX-OS Software 10.3(6) |
| Cisco | Cisco | NX-OS Software 9.3(14) |
| Cisco | Cisco | NX-OS Software 10.4(4) |
| Cisco | Cisco | NX-OS Software 10.3(4h) |
| Cisco | Cisco | NX-OS Software 10.5(2) |
| Cisco | Cisco | NX-OS Software 10.5(1j) |
| Cisco | Cisco | NX-OS Software 8.4(11) |
| Cisco | Cisco | NX-OS Software 9.4(3) |
| Cisco | Cisco | NX-OS Software 10.3(7) |
| Cisco | Cisco | NX-OS Software 10.4(5) |
| Cisco | Cisco | NX-OS Software 10.5(3) |
| Cisco | Cisco | NX-OS Software 9.3(15) |
| Cisco | Cisco | NX-OS Software 9.4(3a) |
| Cisco | Cisco | NX-OS Software 10.4(4g) |
| Cisco | Cisco | NX-OS Software 10.5(4) |
| Cisco | Cisco | NX-OS Software 9.4(3b) |
| Cisco | Cisco | NX-OS Software 8.4(12) |
| Cisco | Cisco | NX-OS Software 10.6(1) |
| Cisco | Cisco | NX-OS Software 10.5(3t) |
| Cisco | Cisco | NX-OS Software 10.3(8) |
| Cisco | Cisco | NX-OS Software 10.4(6) |
| Cisco | Cisco | NX-OS Software 10.5(3s) |
| Cisco | Cisco | NX-OS Software 10.5(3e) |
| Cisco | Cisco | NX-OS Software 9.4(4) |
| Cisco | Cisco | NX-OS Software 10.5(3o) |
| Cisco | Cisco | NX-OS Software 9.3(16) |
| Cisco | Cisco | NX-OS Software 10.6(1s) |
| Cisco | Cisco | NX-OS Software 10.6(2) |
| Cisco | Cisco | NX-OS Software 10.5(3p) |
| Cisco | Cisco | NX-OS Software 9.4(5) |
| Cisco | Cisco | NX-OS Software 10.3(9) |
| Cisco | Cisco | NX-OS Software 10.6(2s) |
| Cisco | Cisco | NX-OS Software 8.4(13) |
| Cisco | Cisco | NX-OS Software 10.6(3) |
| Cisco | Cisco | NX-OS Software 10.4(7) |
| Cisco | Cisco | NX-OS Software 10.5(5) |
| Cisco | Cisco | NX-OS Software 9.3(17) |
| Cisco | Cisco | NX-OS Software 10.6(2n) |
| Cisco | Cisco | NX-OS Software 10.6(3q) |
| Cisco | Cisco | NX-OS Software 10.6(3o) |
| Cisco | Cisco | NX-OS Software 10.6(3s) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(1g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(2e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(2f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(2g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(2h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(3f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(3e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(3g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(4d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(4e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(5c) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(5d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(1g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(5e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(4f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(6e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(6h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(1j) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(6g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(7f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(7g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(2h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(8d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(2j) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(8e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(3d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(3e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(8f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(8g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(1d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(8h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(4c) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(2a) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.2(8i) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(5h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(2b) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(3g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(5j) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(2c) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(6c) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(2d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(1f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(7e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(8e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(2e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(8f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(2f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(2g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 15.3(2f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(9c) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(3f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(9d) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(6h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(8h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(3g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(9e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(4h) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.1(5e) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.2(1g) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.0(9f) |
| Cisco | Cisco | NX-OS System Software in ACI Mode 16.2(2e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(1a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(1d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4f) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(2b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(2a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4h) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(2a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(1c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(1b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(1e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(2e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(1a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4g) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(1d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(1c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4i) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(2d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(1b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(2b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4k) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(2c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4l) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(4a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4m) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1f) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3f) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1i) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3h) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1k) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1l) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4n) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1m) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3i) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(2a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(1n) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3j) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(2c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(2d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3k) |
| Cisco | Cisco | Unified Computing System (Managed) 4.0(4o) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(2e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3g) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3l) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(2b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3h) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3i) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(2c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3m) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(2e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(3a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3j) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(3c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(4a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3k) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(4b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(4c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3l) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(4d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(2f) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3m) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(5a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(4e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.1(3n) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(4f) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3n) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(5c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3o) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(5d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6a) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6b) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(5e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3p) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(1b) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(1c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6d) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(1d) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(1e) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6e) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(1f) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6f) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(2b) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(1h) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3r) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(2c) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6g) |
| Cisco | Cisco | Unified Computing System (Managed) 6.0(2d) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6h) |
| Cisco | Cisco | Unified Computing System (Managed) 4.2(3s) |
| Cisco | Cisco | Unified Computing System (Managed) 4.3(6i) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
