Tag: local privilege escalation
30 articles
Microsoft patches LegacyHive zero-day vulnerability
Microsoft just patched a nasty zero-day vulnerability, known as LegacyHive, that could let hackers gain administrator privileges on your Windows PC - but thankfully, it's now fixed in the August Patch Tuesday updates.
Linux Flaw Exposes Local Users to Root via Open vSwitch
A newly discovered Linux flaw, CVE-2026-64531, lets local users potentially gain root access via Open vSwitch, even without an existing OVS bridge, running ovs-vswitchd, or host-level CAP_NET_ADMIN privileges. This vulnerability, with a CVSS score of 7.8, was quickly patched after being responsibly disclosed.
AI-Assisted Research Exposes Linux Kernel Zero-Day Flaw
Researchers have uncovered a long-standing vulnerability in the Linux kernel, known as CVE-2026-53264, which allows a local user to gain root privileges by exploiting a flaw in the packet-scheduling code. This zero-day flaw was identified with the help of AI-assisted research and has since been patched.
AI-Assisted Linux Exploit Turns Local Users into Root
Researchers have uncovered a significant Linux exploit, CVE-2026-53264, that can turn local users into root users, highlighting the importance of human judgement in AI-assisted security work. This flaw, patched in June 2026, shows AI still has limitations, emphasizing the need for human oversight.
Ubuntu Flaw Exposes Local Users to Root Access on Default Desktop Installs
A newly discovered security flaw, CVE-2026-8933, can give local users full root control of Ubuntu Desktop installs, posing a significant threat to default installations of Ubuntu Desktop 24.04, 25.10, and 26.04. This high-severity vulnerability highlights the importance of staying vigilant about system security.
Ubuntu Vulnerability Exposes Local Users to Root Access Risk
A newly discovered vulnerability, CVE-2026-8933, puts users of Ubuntu Desktop 24.04, 25.10, and 26.04 at risk of full root access, allowing any local user to gain unrestricted control on default installs. This high-severity flaw can be easily exploited by a local, unprivileged user, making immediate attention crucial.
Nightmare Eclipse Unveils Windows Zero-Day Exploit
A security researcher is sounding the alarm about a newly unveiled Windows zero-day exploit, dubbed LegacyHive, which targets the Windows User Profile Service and could allow for a full system compromise. The proof-of-concept exploit, published by a zero-day hunter known as NightmareEclipse, is just a glimpse of the potential damage this vulnerability could cause.
Linux Flaw Exposes Multi-Tenant Environments to Root Privilege Escalation
A newly discovered Linux flaw, dubbed DirtyClone, lets local users easily gain root privileges on popular systems like Debian, Ubuntu, and Fedora - putting shared environments at risk of a devastating breach. This vulnerability is especially alarming in setups with user namespaces enabled or privileged containers deployed.
Linux Kernel Flaw Enables Unprivileged Root Access
A shocking Linux kernel flaw, dubbed pedit COW, allows unprivileged users to gain root access on vulnerable hosts by cleverly corrupting an in-memory cached copy of a setuid binary. This stealthy exploit requires no disk changes, making it nearly undetectable.
Disgruntled Bug Hunter Exposes New Windows 0-Day Vulnerability
A disgruntled bug hunter, known as Nightmare Eclipse, has revealed a new zero-day vulnerability called RoguePlanet, which can give attackers SYSTEM-level control over fully patched Windows 10 and 11 systems. The exploit, fueled by a grudge against Microsoft, targets a weakness in Windows Defender.
Microsoft Fixes Zero-Days in June Patch Tuesday Update
Microsoft just dropped some critical patches in its June update, fixing three zero-day vulnerabilities that left Windows systems open to attacks - and one security researcher isn't happy about the delayed fix. The update squashes bugs that allowed hackers to escalate privileges or bypass disk encryption.
Cisco SD-WAN Manager Flaw Actively Exploited
Cisco is warning of a high-severity vulnerability in its Catalyst SD-WAN Manager that allows attackers to execute commands as root, and it's already being exploited by hackers. This flaw, rated 7.8 on the CVSS scale, could give attackers control over your system if they're able to upload a malicious file.
Microsoft Discloses Actively Exploited Defender Vulnerabilities
Microsoft warns of two critical vulnerabilities in its Defender software, one of which is being actively exploited by attackers to gain elevated privileges, and the other causing denial-of-service issues. These flaws, tracked as CVE-2026-41091 and CVE-2026-45498, highlight the need for urgent patching to prevent system compromise.
Linux Flaw Enables Root Command Execution on Major Distros
A newly discovered Linux flaw, tracked as CVE-2026-46333, allows hackers to easily gain root access on major distributions, putting countless systems at risk. This nine-year-old vulnerability, just recently exposed, is a wake-up call for Linux users everywhere.
Exploit Released for PinTheft Linux Flaw
A critical Linux flaw, dubbed PinTheft, has been exploited, allowing local attackers to gain root privileges on affected systems through a complex vulnerability in the Reliable Datagram Sockets (RDS) code. This security gap can be triggered by a specific interaction between RDS zerocopy and io_uring fixed buffers.
Windows Zero-Day Exploit MiniPlasma Exposes SYSTEM Vulnerability
A security researcher has uncovered a Windows zero-day exploit, dubbed MiniPlasma, that can grant SYSTEM privileges on fully patched systems, revealing a vulnerability that was originally reported to Microsoft in 2020 but left unpatched. The researcher released a proof-of-concept exploit on GitHub, highlighting the issue with the Cloud Filter driver.
Hackers Disrupt Microsoft Exchange, Windows 11 at Pwn2Own Contest
Security researchers just scored big at Pwn2Own Berlin 2026, raking in $385,750 for exploiting 15 zero-day vulnerabilities in top tech targets like Microsoft Exchange and Windows 11. The contest, running from May 14-16, offers up to $1 million in prizes for hacking the latest enterprise technologies.
Linux Flaw Exposes Local Users to Root Access
A newly discovered Linux flaw, dubbed Fragnesia, allows unprivileged local users to gain root access by exploiting a weakness in the kernel's handling of shared page fragments, putting all Linux kernels released before May 13, 2026, at risk. This vulnerability can be triggered through a simple sequence of operations, making it a serious threat to Linux users.
Linux Kernel Vulnerability Exposes Root Access Risk via Page Cache Corruption
A newly discovered Linux Kernel vulnerability, dubbed Fragnesia, allows unprivileged local attackers to corrupt the kernel page cache and gain root access, posing a significant risk to system security. This critical flaw, tracked as CVE-2026-46300, is the third local privilege escalation vulnerability found in Linux kernel in just two weeks.
Linux Vulnerability Exposes Widespread Risk of Local Privilege Escalation
A critical Linux vulnerability, dubbed copy.fail, poses a severe risk of local privilege escalation, allowing unprivileged processes to rapidly escalate to root access. This shocking flaw, considered one of the worst in years, can be exploited with alarming ease.
Linux Distributions Scramble to Patch Dirty Frag Kernel Vulnerabilities
A critical vulnerability known as Dirty Frag has been discovered in the Linux kernel, allowing attackers with local access to gain root privileges across major distributions. Linux distributions are now racing against the clock to patch this chained local privilege escalation flaw.
Linux 'Dirty Frag' Zero-Day Exposes Root Flaw in Major Distros
A newly discovered Linux zero-day, dubbed "Dirty Frag," allows hackers to instantly gain root access on major distributions by chaining two separate kernel vulnerabilities. This flaw enables attackers to alter protected system files in memory without authorization, putting countless systems at risk.
Linux Flaw Enables Root Access Across Major Distributions
A newly discovered Linux flaw, dubbed Dirty Frag, allows hackers to gain root access across major distributions by exploiting a chain of vulnerabilities in the kernel codebase. This unpatched local privilege escalation is a deterministic logic bug, making it a particularly potent threat.
Linux Flaw Exposes Millions to Local Privilege Escalation
A critical Linux flaw, known as Copy Fail, has been discovered, exposing millions to potential local privilege escalation attacks - a vulnerability that highlights a deterministic logic error in the Linux kernel's cryptographic subsystem. This flaw, tracked as CVE-2026-31431, was publicly disclosed on April 29, 2026.