CVE-2026-53921

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

July 29, 2026

Last Seen

July 29, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

OpenWrt Releases Critical Security Updates for DHCPv6 Vulnerabilities72.0

OpenWrt has released updates for versions 24.10.8 and 25.12.5 to address critical security vulnerabilities. The most severe issue is a buffer overflow in the odhcpd DHCP server, allowing unauthenticated attackers to execute code remotely (CVE-2026-53921, CVSS 9.8). Another vulnerability allows for s...

OpenAI Launches GPT-5.4-Cyber Amidst Cybersecurity Arms Race51.9

OpenAI has introduced GPT-5.4-Cyber, a specialized AI model for defensive cybersecurity, available only to vetted professionals through its Trusted Access for Cyber (TAC) program. This model is designed to facilitate advanced tasks such as binary reverse engineering and vulnerability analysis with f...