9.8

CVE-2026-76465: cisco cisco nx-os software Free of Memory not on the Heap

CVSS: 9.8v3.1CriticalAwaiting analysis
Published 07-10-2026Last modified 08-10-2026
Open JSON

Vulnerability summary

CVE-2026-76465 is a critical (CVSS 9.8) Free of Memory not on the Heap vulnerability in cisco cisco nx-os software. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.45%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-10-2026
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

Description

A vulnerability in the MPLS Operation, Administration, and Maintenance (OAM) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to execute arbitrary code with root privileges or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper validation when an affected device is processing an MPLS echo-request packet. An attacker could exploit this vulnerability by sending a crafted MPLS echo-request to an IP address on an affected device. A successful exploit could allow the attacker to execute arbitrary code with root privileges and could cause process crashes, which could result in a device reload and a DoS condition.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

08-10-202621-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Cisco1 product
  • cisco nx-os software9.3(2) | 9.3(1) | 9.3(1z) | 9.3(3) | 9.3(4) | 9.3(5) | 9.3(6) | 9.3(5w) | 9.3(7) | 9.3(7k) | 9.3(7a) | 9.3(8) | 9.3(9) | 9.3(10) | 10.3(1) | 10.3(2) | 9.3(11) | 10.3(3) | 9.3(12) | 10.4(1) | 10.3(99w) | 10.3(3w) | 10.3(99x) | 10.3(3o) | 10.3(4) | 10.3(3p) | 10.3(4a) | 10.4(2) | 10.3(3q) | 9.3(13) | 10.3(5) | 10.4(3) | 10.3(3x) | 10.3(4g) | 10.5(1) | 10.3(3r) | 10.3(6) | 9.3(14) | 10.4(4) | 10.3(4h) | 10.5(2) | 10.3(7) | 10.4(5) | 10.5(3) | 9.3(15) | 10.4(4g) | 10.5(4) | 10.6(1) | 10.5(3t) | 10.3(8) | 10.4(6) | 10.5(3s) | 10.5(3e) | 10.5(3o) | 9.3(16) | 10.6(1s) | 10.6(2) | 10.5(3p) | 10.3(9) | 10.6(2s) | 10.6(3) | 10.4(7) | 10.5(5) | 9.3(17) | 10.6(2n) | 10.6(3s)

1 vendor · 1 product

References

1 links