CVE-2025-55086CWE-125CWE-1285

CVE-2025-55086

Critical · published October 20, 2025

CVSS v3.1
9.8
EPSS
0%
Percentile
34.5
In the wild
Unconfirmed
What it is

⚠️ A crafty crafted packet could lead to an out-of-memory read in NetXDuo's DHCPv6 client! This unchecked index is a sneaky little oversight waiting to be exploited. 🔍 Think of this vulnerability like a specific delivery that accidentally opens a fancy box meant for VIPs, letting anyone peek inside without proper security checks. If someone gets clever with their package, they could cause quite the mess! 📦 An attacker could potentially craft a malicious packet that leads to unexpected behavior within the system, causing instability and possibly crashing the DHCPv6 client. While there might not be immediate data loss, the disruption in network services could be absolutely frustrating for users and admins alike.

Put simply

Think of this vulnerability like a specific delivery that accidentally opens a fancy box meant for VIPs, letting anyone peek inside without proper security checks. If someone gets clever with their package, they could cause quite the mess! 📦 This vulnerability in NetXDuo versions before 6.4.4 allows an attacker to exploit an unchecked index when extracting the server DUID from server replies in the DHCPv6 client, leading to an out-of-memory read.

What to do

An attacker could potentially craft a malicious packet that leads to unexpected behavior within the system, causing instability and possibly crashing the DHCPv6 client. While there might not be immediate data loss, the disruption in network services could be absolutely frustrating for users and admins alike. Upgrade NetXDuo to version 6.4.4 or later immediately to close this vulnerability. Ensure that all network modules are regularly reviewed for potential security flaws and implement necessary patches. Regularly monitor for updates to stay protected! You've got this! Take these steps, and you'll have your network defenses bolstered in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00413 · 34.5th percentile
Weaknesses
CWE-125 · Out-of-bounds Read; CWE-1285 · Improper Validation of Specified Index, Position, or Offset in Input
Published
2025-10-20T22:15Z
Affected products (1)
ProductVersionsFixed in
eclipse/threadx_netx_duo< 6.4.4.2025036.4.4.202503
References (1)
EPSS history
Timeline
  • 20 OCT 17:49Z
    In NetXDuo version before 6.4.4, a networking support module for Eclipse Foundation ThreadX, in the DHCPV6 client there was an unchecked index extracting the…
    cvelistv5