CVE-2026-45659 on DanSec Daily

Cybersecurity Brief – 2026-07-02

Thu, 02 Jul 2026 00:00:00 +0000

Major Incidents or Breaches

Medtronic has notified customers of a data breach resulting from unauthorized access to personal data, attributed to the ShinyHunters threat actor group ^[19].
Kubota North America Corporation disclosed that hackers had access to parts of its network systems for over a month earlier this year ^[21].
The US Department of Homeland Security confirmed a breach of the Homeland Security Information Network (HSIN), a sensitive information-sharing platform used by government agencies ^[23].
Over 900 Oracle E-Business Suite instances have been found exposed online and are subject to ongoing attacks exploiting a critical security flaw ^[27].

Newly Discovered Vulnerabilities

Adobe released patches for multiple critical vulnerabilities in ColdFusion and Campaign Classic, including seven flaws rated CVSS 10.0 that could lead to arbitrary code execution ^[13]^[37].
Citrix issued patches for NetScaler appliances, addressing six vulnerabilities including a new HTTP/2 Bomb attack and a high-severity CitrixBleed-style information disclosure bug ^[38].
Apple released security updates for iOS, macOS, and Safari, addressing dozens of vulnerabilities affecting WebKit, the kernel, WebRTC, and other components ^[40].
Google released a Chrome update fixing 382 security bugs, with 15 rated as critical ^[46].
Argo CD has an unpatched vulnerability in its repo-server component that allows unauthenticated attackers to execute code if they can access the component ^[8].
Microsoft SharePoint Server vulnerability CVE-2026-45659 has been added to the CISA Known Exploited Vulnerabilities catalog following reports of active exploitation ^[7].
Progress Kemp LoadMaster is affected by a critical pre-authentication remote code execution flaw that is currently seeing active exploitation attempts ^[15].

Notable Threat Actor Activity

Kaspersky researchers identified a large-scale campaign using compromised ScreenConnect software, distributed via SEO-poisoned sites, to deliver AsyncRAT malware ^[1]^[10].
The FortiBleed credential theft campaign has been linked to the INC and Lynx ransomware groups, indicating that stolen Fortinet credentials are intended to facilitate future network intrusions and ransomware attacks ^[20].
A 19-year-old suspected member of the Scattered Spider hacking group has been extradited from Finland to the US to face hacking and fraud charges ^[9].
The Ousaban banking trojan is targeting users in Spain and Portugal with phishing PDF lures to infect Windows systems ^[12].
A new campaign is delivering the PureLogs information stealer through a multi-stage malware chain leveraging Blogger pages and social engineering ^[11].
Multiple weaponized proof-of-concept (PoC) exploits on GitHub are distributing the ChocoPoC remote access trojan, targeting vulnerability researchers ^[6]^[22].

Trends, Tools, or Tactics of Interest

Attackers are using fingerprinting via user-agent data to adapt phishing payloads to the victim’s device and operating system, increasing compromise rates ^[30].
ClickFix, a social engineering technique, is reported as a dominant method for malware delivery ^[31].
AI-generated browser ransomware has been observed abusing the Chromium API across Windows, Linux, macOS, and Android, combining novel attack paths with real browser capabilities ^[16]^[43].
A fake Perplexity Chrome extension, “Search for perplexity ai,” was found to be spying on user searches and requires manual removal ^[44].
Large language models (LLMs) are being exploited for “phantom squatting,” where hallucinated domains for legitimate brands are registered by attackers for supply chain attacks ^[32].
Two vulnerabilities in the AI code editor Cursor could allow prompt injection to escape the sandbox and execute arbitrary commands on a developer’s machine ^[14].
Phishing attacks have exposed employee data at 86 percent of Fortune 100 companies in the past year, with technology, airline, and automotive sectors most affected ^[4].
Hackers conducted over 81 million password-spraying login attempts against Microsoft 365 accounts in a two-week period ^[25].

Regulatory or Policy Developments Affecting the Security Industry

Microsoft announced it is accelerating its post-quantum cryptography roadmap, targeting a transition by 2029 due to advances in quantum computing ^[18].
The US Federal Trade Commission fined Amazon $2.25 million for withholding transaction records from identity theft victims, impacting fraud investigations ^[29].
Microsoft introduced new Teams admin policies requiring organizer approval for external AI bots in meetings, enhancing control over automated participants ^[36].

Sources

Medtronic notifies customers impacted by ShinyHunters data breach - bleepingcomputer.com
Kubota says hackers had month-long access to network systems - bleepingcomputer.com
DHS confirms hackers breached HSIN info-sharing platform - bleepingcomputer.com
Over 900 Oracle E-Business instances exposed to ongoing attacks - bleepingcomputer.com
Adobe Patches 7 CVSS 10.0 Flaws in ColdFusion and Campaign Classic - thehackernews.com
Adobe Patches Critical ColdFusion, Campaign Classic Vulnerabilities - securityweek.com
Citrix Patches NetScaler Vulnerabilities, Including New ‘HTTP/2 Bomb’ Attack - securityweek.com
Apple Patches Dozens of Vulnerabilities Across iOS, macOS, and Safari - securityweek.com
Chrome needs another whopper update to fix 382 security bugs - malwarebytes.com
Unpatched Argo CD Repo-Server Flaw Could Let Attackers Take Over Kubernetes Clusters - thehackernews.com
SharePoint RCE CVE-2026-45659 Added to CISA KEV After Active Exploitation - thehackernews.com
Progress Kemp LoadMaster Pre-Auth RCE Flaw Faces Active Exploitation Attempts - thehackernews.com
The SOC Files: ScreenConnect masked as freeware. An inside look at a large-scale campaign - securelist.com
SEO-Poisoned Software Sites Abuse ScreenConnect to Deploy AsyncRAT - thehackernews.com
FortiBleed credential-theft campaign linked to Lynx ransomware - bleepingcomputer.com
19-Year-Old Scattered Spider Suspect Extradited to Face U.S. Hacking Charges - thehackernews.com
Ousaban Banking Trojan Targets Iberian Bank Users with Fake PDF Lures - thehackernews.com
VEIL#DROP Malware Chain Uses Blogger Platform to Deliver PureLogs Stealer - thehackernews.com
New ChocoPoC RAT Targets Vulnerability Researchers via Fake PoC Exploit Repos - thehackernews.com
New ChocoPoC malware targets researchers via trojanized PoC exploits - bleepingcomputer.com
Crafty Phishing Campaigns Auto-Adapt to Victim's Device, OS - darkreading.com
And the Winner in Dominant Malware Delivery? ClickFix - darkreading.com
AI-Generated Browser Ransomware Abuses Chromium API on Windows, Linux, macOS, Android - thehackernews.com
Browser-Only Ransomware: From LLM Hallucinations to a Practical Attack Technique - research.checkpoint.com
Fake Perplexity Chrome extension spies on your searches - malwarebytes.com
'Phantom Squatting': An Emerging AI-Driven Supply Chain Threat - darkreading.com
Critical Cursor Flaws Could Let Prompt Injection Escape Sandbox and Run Commands - thehackernews.com
Phishing Exposes Employee Data at 86% of Fortune 100 Companies - blog.knowbe4.com
Hackers target Microsoft 365 accounts with 81 million login attempts - bleepingcomputer.com
Microsoft Accelerates Post-Quantum Cryptography Shift to 2029 - thehackernews.com
Amazon fined $2.25M for withholding evidence from fraud victims - bleepingcomputer.com
Microsoft Adds New Teams Controls to Block Unauthorized AI Bots From Meetings - securityweek.com

Cybersecurity Brief – 2026-05-27

Wed, 27 May 2026 00:00:00 +0000

Major Incidents or Breaches

Charter Communications confirmed a data breach after the ShinyHunters extortion group threatened to leak stolen data unless a ransom was paid ^[13].
Information allegedly stolen from 7-Eleven has been leaked, impacting approximately 185,000 individuals and exposing email addresses, names, addresses, and dates of birth ^[33].
Over 5,500 GitHub repositories were compromised in a campaign using Megalodon malware, resulting in theft of credentials and developer secrets ^[18].
More than 700 education and tech websites were hijacked in a large-scale ClickFix malware campaign, exploiting a Ghost CMS flaw to serve malicious Cloudflare verification pages ^[40].

Newly Discovered Vulnerabilities

Microsoft released patches for a critical remote code execution vulnerability in SharePoint (CVE-2026-45659), which could be exploited without specialized conditions ^[8]^[20].
A critical zero-day vulnerability in the KnowledgeDeliver learning management system was exploited to deploy the Godzilla web shell; the flaw involved hardcoded machineKey values that enabled ViewState deserialization attacks ^[12]^[35].
CISA ordered immediate patching of an actively exploited SQL injection vulnerability in Drupal CMS for US government agencies ^[17].
CISA urged urgent patching of a zero-day vulnerability in the LiteSpeed cPanel plugin that was exploited in the wild to execute scripts with root privileges ^[29].

Notable Threat Actor Activity

The ShinyHunters extortion group was responsible for threats and data leaks targeting Charter Communications and 7-Eleven ^[13]^[33].
The Iranian APT group MuddyWater conducted a new espionage campaign targeting organizations across nine countries, employing DLL side-loading techniques ^[6].
The Iranian APT known as Nimbus Manticore continued targeting aviation and software companies using updated tools ^[32].
The FBI warned that the Silent Ransom Group is sending operatives in person to law firms to physically insert USB drives and steal data ^[28].
Fake installers and plugins for popular software such as ChatGPT and Claude, distributed via GitHub and SourceForge, were found to deliver Deno RAT, granting attackers full device control ^[39].

Trends, Tools, or Tactics of Interest

Threat actors are increasingly augmenting attacks with AI tools, including real-time operational deployment of AI in offensive operations, smarter AI-driven DDoS attacks, and use of AI to generate plain-English remediation guidance for vulnerabilities ^[2]^[7]^[38]^[37].
AI chatbot recommendations are being abused to redirect users to cryptojacking malware sites in active campaigns ^[5].
Multi-factor authentication (MFA) prompt bombing remains a prevalent tactic to bypass second-factor protections ^[9].
Remote access trojans such as BTMOB are leveraging ready-made campaign tools to lower barriers for full device compromise on Android devices ^[4].
Microsoft Defender is testing automatic endpoint isolation to prevent lateral movement after compromise ^[15].
AppOmni’s Marlin AI and Varonis Atlas are leveraging AI for autonomous SaaS security investigation and AI governance, respectively ^[31]^[14].
Anthropic released a Claude Sandbox security plugin to assist developers in identifying vulnerabilities during coding and expanded Claude’s enterprise security governance with 28 new integrations, including major security vendors ^[30]^[34].

Regulatory or Policy Developments Affecting the Security Industry

The Indian Computer Emergency Response Team (CERT-In) issued guidelines mandating that critical vulnerabilities in internet-facing systems be patched within 12 hours of detection amid increased AI-assisted attacks ^[10].
CISA announced a revised schedule for town halls to engage stakeholders on cyber incident reporting requirements for critical infrastructure ^[27].

Sources

Charter confirms data breach after ShinyHunters extortion threat - bleepingcomputer.com
185,000 Likely Impacted by 7-Eleven Data Breach - securityweek.com
Feeding Frenzy: 'Megalodon' Malware Infects Thousands of GitHub Repos - darkreading.com
700+ education and tech websites hijacked in huge ClickFix malware campaign - malwarebytes.com
Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions - thehackernews.com
Microsoft Issues Out-of-Band SharePoint Patch - darkreading.com
KnowledgeDeliver flaw exploited as a zero-day to install web shells - bleepingcomputer.com
Hackers Exploited KnowledgeDeliver Zero-Day for Web Shell Deployment - securityweek.com
CISA orders feds to patch actively exploited Drupal vulnerability - bleepingcomputer.com
CISA Urges Immediate Patching of Exploited LiteSpeed cPanel Plugin Zero-Day - securityweek.com
MuddyWater Uses DLL Side-Loading in Espionage Campaign Targeting 9 Countries - thehackernews.com
Iranian APT Targets Aviation, Software Companies With Updated Tools - securityweek.com
FBI: Hackers Sending Operatives in Person to Insert USB Drives and Steal Data - securityweek.com
Fake software on GitHub and SourceForge distribute Deno RAT - malwarebytes.com
Report: Adversarial Use of AI is Evolving - blog.knowbe4.com
[THN Webinar] New AI DDoS Attacks Are Smarter. Learn How to Fight Back - thehackernews.com
AI Threat Landscape Digest March-April 2026 - research.checkpoint.com
Open Source DockSec Uses AI to Cut Through Vulnerability Noise in Docker Images - securityweek.com
AI Chatbot Recommendations Redirect Users to Cryptojacking Malware Sites - thehackernews.com
MFA Prompt Bombing: Why Your Second Factor Isn't Saving You - thehackernews.com
BTMOB: A stealthy RAT burrowing deep into Android devices - welivesecurity.com
Microsoft Defender can now automatically isolate hacked endpoints - bleepingcomputer.com
AppOmni’s Marlin AI Brings Autonomous Investigation to SaaS Security - securityweek.com
How Varonis Atlas integrates Claude Compliance API for AI governance - bleepingcomputer.com
Anthropic Releases New Claude Sandbox, Security Guidance Plugin - securityweek.com
Anthropic Expands Claude’s Enterprise Security Governance With 28 New Integrations - securityweek.com
CERT-In Recommends 12-Hour Patching for Internet-Facing Flaws Amid AI-Assisted Attacks - thehackernews.com
CISA Announces Revised Town Hall Schedule to Engage with Stakeholders on Cyber Incident Reporting for Critical Infrastructure - cisa.gov