CRITICALVulnerability
Global

Critical OpenWrt DHCPv6 Flaw Could Let Unauthenticated Attackers Run Code as Root

·Source: The Hacker News

Updated:

Executive Summary

OpenWrt has shipped version 24.10.8 to close a critical DHCPv6 stack overflow and a wider set of remotely triggerable flaws in network services enabled by default. The critical issue, tracked as CVE-2026-53921 and rated 9.8 on CVSS 3.1 in OpenWrt's GitHub advisory, lets an unauthenticated attacker able to reach the DHCPv6 server overwrite a stack buffer in odhcpd through a crafted DHCPv6

Analysis

OpenWrt has shipped version 24.10.8 to close a critical DHCPv6 stack overflow and a wider set of remotely triggerable flaws in network services enabled by default. The critical issue, tracked as CVE-2026-53921 and rated 9.8 on CVSS 3.1 in OpenWrt's GitHub advisory, lets an unauthenticated attacker able to reach the DHCPv6 server overwrite a stack buffer in odhcpd through a crafted DHCPv6

Indicators of Compromise (1)

CVE (1)
CVE-2026-53921
NVDMITRE CVE
Source Attribution

Originally published by The Hacker News on Jul 28, 2026.

Related Threats

CRITICALVulnerabilityNEW

N-Able Flaw Exposes MSPs to Worst Case Scenario

<img src="https://ismg-cdn.nyc3.cdn.digitaloceanspaces.com/articles/n-able-flaw-exposes-msps-to-worst-case-scenario-image_small-10-a-32397.jpg" align=right hspace=4><b>Remote Management and Monitoring Tools Widely Used by Managed Security Providers</b><br>Remote management and monitoring software developer N-Able published a second hotfix to patch a vulnerability in all versions of its N-central s

Bank Info Security
MEDIUMVulnerabilityNEW

Hackers steal 31,000 records identifying people behind Liechtenstein companies, foundations

A cyberattack compromised tens of thousands of records related to companies, foundations and trusts in Liechtenstein, prompting the government to to form a “crisis unit” to address the breach.

The Record
HIGHVulnerability

NVD HIGH: CVE-2026-67611 — OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allow...

OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allows attackers with valid credentials to circumvent multi-factor authentication by exploiting the exposed OAuth2 password grant flow through an unauthenticated client registration endpoint. Attackers can register an OAuth2 client via the unauthenticated registration endpoint and use the password grant to exchange credenti

CVE-2026-67611
NIST NVD