TI-2026-69217 Aliases CVE-2026-76453 GHSA-f77q-jh4p-g2hw

Improper neutralization flaws in Cisco NX-OS software

MEDIUM 40CWE-707Published 2026-10-07 · Updated 2026-11-07

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Cisco NX-OS Software, Cisco NX-OS System Software in ACI Mode and Cisco Unified Computing System (Managed) are affected by multiple improper neutralization flaws (CWE-707) found in an internal security review. A remote attacker with low privileges can fully compromise confidentiality, integrity and availability without any user interaction.

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 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-2026-76453 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) CWE-707.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00336 27th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

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 NX-OS Software	8.2(5); 7.3(5)D1(1); 8.4(2); 8.4(3); 9.2(3); 8.2(1); 7.3(1)D1(1); 9.2(2v); 7.3(0)D1(1); 7.3(4)D1(1); 9.2(1); 9.2(2t); 9.2(3y); 9.3(2); 7.3(1)DY(1); 8.1(1); 8.2(2); 8.3(2); 7.3(2)D1(3a); 9.2(4); 8.1(2); 7.3(3)D1(1); 8.2(3); 8.3(1); 8.4(1); 8.1(1b); 7.3(0)DX(1); 7.3(2)D1(1); 9.3(1); 7.3(2)D1(2); 8.2(4); 7.3(0)DY(1); 9.3(1z); 9.2(2); 8.1(2a); 7.3(2)D1(3); 8.1(1a); 8.4(1a); 9.3(3); 7.3(2)D1(1d); 9.3(4); 7.3(6)D1(1); 8.2(6); 9.3(5); 8.4(2a); 8.4(2b); 8.5(1); 9.3(6); 8.4(4); 7.3(7)D1(1); 8.4(2c); 9.3(5w); 8.2(7); 9.3(7); 9.3(7k); 7.3(8)D1(1); 9.3(7a); 8.2(7a); 9.3(8); 8.4(4a); 8.4(2d); 8.4(5); 8.2(8); 9.3(9); 7.3(9)D1(1); 8.4(6); 8.4(2e); 9.3(10); 9.2(1a); 8.2(9); 10.3(1); 8.4(7); 10.3(2); 8.4(6a); 9.3(11); 10.3(3); 9.4(1); 9.3(2a); 8.4(2f); 8.2(10); 9.3(12); 10.4(1); 8.4(8); 10.3(99w); 10.3(3w); 10.3(99x); 10.3(3o); 8.4(9); 10.3(4); 10.3(3p); 10.3(4a); 9.4(1a); 10.4(2); 10.3(3q); 9.3(13); 8.2(11); 9.4(2); 10.3(5); 10.4(3); 10.3(3x); 10.3(4g); 10.5(1); 8.4(10); 9.4(2a); 10.3(3r); 10.3(6); 9.3(14); 10.4(4); 10.3(4h); 10.5(2); 10.5(1j); 8.4(11); 9.4(3); 10.3(7); 10.4(5); 10.5(3); 9.3(15); 9.4(3a); 10.4(4g); 10.5(4); 9.4(3b); 8.4(12); 10.6(1); 10.5(3t); 10.3(8); 10.4(6); 10.5(3s); 10.5(3e); 9.4(4); 10.5(3o); 9.3(16); 10.6(1s); 10.6(2); 10.5(3p); 9.4(5); 10.3(9); 10.6(2s); 8.4(13); 10.6(3); 10.4(7); 10.5(5); 9.3(17); 10.6(2n); 10.6(3q); 10.6(3o); 10.6(3s)	—	No fix listed	CNA
Cisco	Cisco NX-OS System Software in ACI Mode	15.2(1g); 15.2(2e); 15.2(2f); 15.2(2g); 15.2(2h); 15.2(3f); 15.2(3e); 15.2(3g); 15.2(4d); 15.2(4e); 15.2(5c); 15.2(5d); 16.0(1g); 15.2(5e); 15.2(4f); 15.2(6e); 15.2(6h); 16.0(1j); 15.2(6g); 15.2(7f); 15.2(7g); 16.0(2h); 15.2(8d); 16.0(2j); 15.2(8e); 16.0(3d); 16.0(3e); 15.2(8f); 15.2(8g); 15.3(1d); 15.2(8h); 16.0(4c); 15.3(2a); 15.2(8i); 16.0(5h); 15.3(2b); 16.0(3g); 16.0(5j); 15.3(2c); 16.0(6c); 15.3(2d); 16.1(1f); 16.0(7e); 16.0(8e); 15.3(2e); 16.0(8f); 16.1(2f); 16.1(2g); 15.3(2f); 16.0(9c); 16.1(3f); 16.0(9d); 16.0(6h); 16.0(8h); 16.1(3g); 16.0(9e); 16.1(4h); 16.1(5e); 16.2(1g); 16.0(9f); 16.2(2e)	—	No fix listed	CNA
Cisco	Cisco Unified Computing System (Managed)	4.0(1a); 4.1(1d); 4.0(4f); 4.0(4c); 4.0(2b); 4.1(2a); 4.0(4a); 4.0(4e); 4.0(4h); 4.0(2a); 4.1(1c); 4.0(1b); 4.1(1e); 4.0(4d); 4.0(4b); 4.0(2e); 4.1(1a); 4.0(4g); 4.0(1d); 4.0(1c); 4.0(4i); 4.0(2d); 4.1(1b); 4.1(2b); 4.0(4k); 4.1(3a); 4.1(3b); 4.1(2c); 4.0(4l); 4.1(4a); 4.1(3c); 4.1(3d); 4.2(1c); 4.2(1d); 4.0(4m); 4.1(3e); 4.2(1f); 4.1(3f); 4.2(1i); 4.1(3h); 4.2(1k); 4.2(1l); 4.0(4n); 4.2(1m); 4.1(3i); 4.2(2a); 4.2(1n); 4.1(3j); 4.2(2c); 4.2(2d); 4.2(3b); 4.1(3k); 4.0(4o); 4.2(2e); 4.2(3d); 4.2(3e); 4.2(3g); 4.1(3l); 4.3(2b); 4.2(3h); 4.2(3i); 4.3(2c); 4.1(3m); 4.3(2e); 4.3(3a); 4.2(3j); 4.3(3c); 4.3(4a); 4.2(3k); 4.3(4b); 4.3(4c); 4.2(3l); 4.3(4d); 4.3(2f); 4.2(3m); 4.3(5a); 4.3(4e); 4.1(3n); 4.3(4f); 4.2(3n); 4.3(5c); 4.2(3o); 4.3(5d); 4.3(6a); 4.3(6b); 4.3(5e); 4.3(6c); 4.2(3p); 6.0(1b); 6.0(1c); 4.3(6d); 6.0(1d); 6.0(1e); 4.3(6e); 6.0(1f); 4.3(6f); 6.0(2b); 6.0(1h); 4.2(3r); 6.0(2c); 4.3(6g); 6.0(2d); 4.3(6h); 4.2(3s); 4.3(6i)	—	No fix listed	CNA

Cisco NX-OS Software VendorCisco Affected 8.2(5); 7.3(5)D1(1); 8.4(2); 8.4(3); 9.2(3); 8.2(1); 7.3(1)D1(1); 9.2(2v); 7.3(0)D1(1); 7.3(4)D1(1); 9.2(1); 9.2(2t); 9.2(3y); 9.3(2); 7.3(1)DY(1); 8.1(1); 8.2(2); 8.3(2); 7.3(2)D1(3a); 9.2(4); 8.1(2); 7.3(3)D1(1); 8.2(3); 8.3(1); 8.4(1); 8.1(1b); 7.3(0)DX(1); 7.3(2)D1(1); 9.3(1); 7.3(2)D1(2); 8.2(4); 7.3(0)DY(1); 9.3(1z); 9.2(2); 8.1(2a); 7.3(2)D1(3); 8.1(1a); 8.4(1a); 9.3(3); 7.3(2)D1(1d); 9.3(4); 7.3(6)D1(1); 8.2(6); 9.3(5); 8.4(2a); 8.4(2b); 8.5(1); 9.3(6); 8.4(4); 7.3(7)D1(1); 8.4(2c); 9.3(5w); 8.2(7); 9.3(7); 9.3(7k); 7.3(8)D1(1); 9.3(7a); 8.2(7a); 9.3(8); 8.4(4a); 8.4(2d); 8.4(5); 8.2(8); 9.3(9); 7.3(9)D1(1); 8.4(6); 8.4(2e); 9.3(10); 9.2(1a); 8.2(9); 10.3(1); 8.4(7); 10.3(2); 8.4(6a); 9.3(11); 10.3(3); 9.4(1); 9.3(2a); 8.4(2f); 8.2(10); 9.3(12); 10.4(1); 8.4(8); 10.3(99w); 10.3(3w); 10.3(99x); 10.3(3o); 8.4(9); 10.3(4); 10.3(3p); 10.3(4a); 9.4(1a); 10.4(2); 10.3(3q); 9.3(13); 8.2(11); 9.4(2); 10.3(5); 10.4(3); 10.3(3x); 10.3(4g); 10.5(1); 8.4(10); 9.4(2a); 10.3(3r); 10.3(6); 9.3(14); 10.4(4); 10.3(4h); 10.5(2); 10.5(1j); 8.4(11); 9.4(3); 10.3(7); 10.4(5); 10.5(3); 9.3(15); 9.4(3a); 10.4(4g); 10.5(4); 9.4(3b); 8.4(12); 10.6(1); 10.5(3t); 10.3(8); 10.4(6); 10.5(3s); 10.5(3e); 9.4(4); 10.5(3o); 9.3(16); 10.6(1s); 10.6(2); 10.5(3p); 9.4(5); 10.3(9); 10.6(2s); 8.4(13); 10.6(3); 10.4(7); 10.5(5); 9.3(17); 10.6(2n); 10.6(3q); 10.6(3o); 10.6(3s) Fixed in — No fix listed CNA
Cisco NX-OS System Software in ACI Mode VendorCisco Affected 15.2(1g); 15.2(2e); 15.2(2f); 15.2(2g); 15.2(2h); 15.2(3f); 15.2(3e); 15.2(3g); 15.2(4d); 15.2(4e); 15.2(5c); 15.2(5d); 16.0(1g); 15.2(5e); 15.2(4f); 15.2(6e); 15.2(6h); 16.0(1j); 15.2(6g); 15.2(7f); 15.2(7g); 16.0(2h); 15.2(8d); 16.0(2j); 15.2(8e); 16.0(3d); 16.0(3e); 15.2(8f); 15.2(8g); 15.3(1d); 15.2(8h); 16.0(4c); 15.3(2a); 15.2(8i); 16.0(5h); 15.3(2b); 16.0(3g); 16.0(5j); 15.3(2c); 16.0(6c); 15.3(2d); 16.1(1f); 16.0(7e); 16.0(8e); 15.3(2e); 16.0(8f); 16.1(2f); 16.1(2g); 15.3(2f); 16.0(9c); 16.1(3f); 16.0(9d); 16.0(6h); 16.0(8h); 16.1(3g); 16.0(9e); 16.1(4h); 16.1(5e); 16.2(1g); 16.0(9f); 16.2(2e) Fixed in — No fix listed CNA
Cisco Unified Computing System (Managed) VendorCisco Affected 4.0(1a); 4.1(1d); 4.0(4f); 4.0(4c); 4.0(2b); 4.1(2a); 4.0(4a); 4.0(4e); 4.0(4h); 4.0(2a); 4.1(1c); 4.0(1b); 4.1(1e); 4.0(4d); 4.0(4b); 4.0(2e); 4.1(1a); 4.0(4g); 4.0(1d); 4.0(1c); 4.0(4i); 4.0(2d); 4.1(1b); 4.1(2b); 4.0(4k); 4.1(3a); 4.1(3b); 4.1(2c); 4.0(4l); 4.1(4a); 4.1(3c); 4.1(3d); 4.2(1c); 4.2(1d); 4.0(4m); 4.1(3e); 4.2(1f); 4.1(3f); 4.2(1i); 4.1(3h); 4.2(1k); 4.2(1l); 4.0(4n); 4.2(1m); 4.1(3i); 4.2(2a); 4.2(1n); 4.1(3j); 4.2(2c); 4.2(2d); 4.2(3b); 4.1(3k); 4.0(4o); 4.2(2e); 4.2(3d); 4.2(3e); 4.2(3g); 4.1(3l); 4.3(2b); 4.2(3h); 4.2(3i); 4.3(2c); 4.1(3m); 4.3(2e); 4.3(3a); 4.2(3j); 4.3(3c); 4.3(4a); 4.2(3k); 4.3(4b); 4.3(4c); 4.2(3l); 4.3(4d); 4.3(2f); 4.2(3m); 4.3(5a); 4.3(4e); 4.1(3n); 4.3(4f); 4.2(3n); 4.3(5c); 4.2(3o); 4.3(5d); 4.3(6a); 4.3(6b); 4.3(5e); 4.3(6c); 4.2(3p); 6.0(1b); 6.0(1c); 4.3(6d); 6.0(1d); 6.0(1e); 4.3(6e); 6.0(1f); 4.3(6f); 6.0(2b); 6.0(1h); 4.2(3r); 6.0(2c); 4.3(6g); 6.0(2d); 4.3(6h); 4.2(3s); 4.3(6i) Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:nx-os::::::::	—	—	Cisco

cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* Versions — — ·Cisco

Remediation

The sources list no fixed version for Cisco NX-OS Software, Cisco NX-OS System Software in ACI Mode or Cisco Unified Computing System (Managed).

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-07 Threatist record created from CVE-2026-76453
2026-10-07 Alias added: GHSA-f77q-jh4p-g2hw
2026-10-08 CISA SSVC decision points changed
2026-10-08 Priority changed: MEDIUM → LOW
2026-10-08 CISA SSVC decision points changed
2026-10-09 Priority changed: LOW → MEDIUM

References

Other 1

cisco-sa-hardening-nxosw1-cWzSbtR

TI-2026-74174 Arbitrary file write in Cisco Secure Email Gateway via AMP feature KEVCVSS 3.1CRITICAL 9.8
TI-2026-53490 Cisco Catalyst SD-WAN Manager System Account Authorization Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-53489 Cisco Secure Email Gateway SQL Injection Vulnerability KEVCVSS 3.1CRITICAL 9.8
TI-2026-53488 Cisco Identity Services Engine Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2026-16388 Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 10.0
TI-2026-16344 Cisco Secure Firewall Management Center Software Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 10.0

See all 7059 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences