CISA has confirmed active exploitation of four critical flaws in Ubiquiti UniFi OS and Lantronix EDS5000 devices, adding them to its Known Exploited Vulnerabilities catalog with a June 26 deadline for federal agencies. Three UniFi OS bugs (CVE-2026-34908, CVE-2026-34909, CVE-2026-34910), each rated 10.0, can be chained for unauthenticated remote code execution and root; attackers were seen creating rogue admin accounts. The Lantronix flaw (CVE-2025-67038) is an unauthenticated root command injection in the EDS5000 serial console server. Ubiquiti patched UniFi OS Server in version 5.0.8, and Lantronix in firmware 2.2.0.0R1. Compromised network appliances let attackers pivot deep into internal networks.
Researchers at XM Cyber detailed a macOS technique that lets an attacker with only standard user privileges disable enterprise security tools and call privileged functions, with no admin credentials, kernel exploit, or alerts. It abuses how macOS caches an application's code signature: once cached, the system keeps trusting the app even after an attacker modifies its components, letting a normal user impersonate trusted code and reach privileged XPC services by injecting into interface files. The team showed it disabling CrowdStrike Falcon and Kandji's MDM agent. CrowdStrike and Kandji have fixed their products, with Kandji assigning CVE-2026-39118, but XM Cyber frames the root cause as a flaw in macOS itself.
The extortion group ShinyHunters has published data stolen from Madison Square Garden Sports, owner of the New York Knicks and Rangers, after the company did not pay. Have I Been Pwned indexed 9,796,738 unique email addresses spanning staff and customers, alongside extensive personal, employment, and customer-relationship records including names, addresses, phone numbers, and some dates of birth. Reporting on the leak describes an internal "Talent" file profiling former players, executives' family members, and celebrities, in some cases with so-called threat assessments. The intrusion reportedly began with voice-phishing of staff, the same social-engineering pattern behind ShinyHunters' wider 2026 campaign against large enterprises.
Bajaj Auto, one of India's largest makers of motorcycles and three-wheelers, has disclosed a ransomware attack that hit its systems and those of its wholly owned subsidiary Bajaj Auto Technology Limited on the morning of June 23. In a regulatory filing, the company said its technical team and outside experts responded quickly and that containment measures have so far been effective. Bajaj Auto has not disclosed the ransomware strain, whether data was stolen, or whether production was affected, and reported the incident to India's CERT-In. Its shares fell more than 2 percent, and the attack follows a separate breach at Tata Electronics.
Zscaler detailed Edgecution, a malicious Microsoft Edge extension used in ransomware-linked intrusions that abuses Chrome's native messaging feature, which normally lets extensions talk to desktop apps, to break out of the browser sandbox and run a Python backdoor on the host. The extension beacons to a command server and relays commands to the backdoor, giving attackers filesystem access and code execution, while running in a hidden headless browser to stay invisible. Attacks start with social engineering on Microsoft Teams, where the actor poses as IT support and directs employees to a fake "Outlook Updates" page. Researchers tie the activity to an access broker linked to the Payouts King ransomware operation.
Symantec and Zscaler detailed Mistic, a stealthy new Windows backdoor used in intrusions since April and tied to KongTuke, an initial access broker that sells footholds to ransomware crews including Qilin, Akira, and Rhysida. Mistic is side-loaded through a legitimate Microsoft executable and a malicious DLL named to mimic endpoint-security software, runs payloads only in memory with nothing written to disk, and includes a self-delete kill switch, all aimed at long-term, low-visibility access. It is delivered through social-engineering lures such as fake CAPTCHAs and Microsoft Teams help-desk pretexts that trick users into running PowerShell commands. Defenders should watch for the unusual DLL side-loading pattern.
A flaw in Cisco Unified Communications Manager, the system that runs enterprise phone and call infrastructure, is now being exploited in attacks. The bug (CVE-2026-20230) is a server-side request forgery that lets an unauthenticated attacker send a crafted HTTP request to write files onto the underlying system, which can then be used to escalate to root and fully take over the server. Cisco patched it on June 3 and rates it critical; public exploit code has been available since, and security firms now see active exploitation attempts. The flaw is only exploitable when the WebDialer service is enabled, which is not the default.
Researchers at LucidBit Labs detailed an eight-year-old use-after-free flaw in the kernel of Samsung's KNOX security framework that affected a huge range of Galaxy devices, from the Galaxy S9 to the S25, across A-series and both Exynos and Qualcomm models. The bug (CVE-2026-20971) sits in a race between two KNOX components that verify process integrity, and a malicious app could exploit it to corrupt kernel memory and potentially take full control of the device. Samsung quietly fixed it in its January 2026 security update. Exploitation requires local access and some user interaction, but a lost, borrowed, or stolen phone makes that realistic.
Researchers at Novee disclosed Cordyceps, a systemic class of weaknesses in CI/CD pipelines, especially GitHub Actions workflows, that lets an attacker with nothing more than a free account hijack a project's build and release process. The danger is not a single bug but how workflows chain together: an untrusted pull request or comment feeds a low-privilege workflow whose output flows into a higher-privilege one, ending in stolen credentials, poisoned artifacts, or malicious releases. A scan of 30,000 repositories found over 300 fully exploitable, with fixes confirmed by Microsoft, Google, Apache, Cloudflare, and the Python Software Foundation. Standard scanners miss it because they check files in isolation.
Xsolis, a US healthcare technology company whose AI software is used by more than 600 hospitals and insurers for utilization management and reimbursement decisions, has disclosed a breach affecting 1,396,519 people. Attackers got in through a targeted phishing attack on an employee in January, accessing files containing patient data Xsolis handles for its clients. The exposed information includes names, dates of birth, addresses, Social Security numbers, health insurance details, and medical treatment information. Because Xsolis is a vendor, affected individuals may never have dealt with it directly; downstream health systems including Mayo Clinic are among those whose patients are impacted.
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