All news with #zero-day tag

Harvard Probes Data Breach Linked to Oracle Zero-Day

🔒 Harvard University is investigating a data breach after the Clop ransomware gang listed the school on its data leak site and attributed the incident to a recently disclosed Oracle E-Business Suite zero-day (CVE-2025-61882). A Harvard IT spokesperson said the issue affected a limited number of parties within a small administrative unit and that a patch from Oracle was applied upon receipt. The university reports no evidence of broader compromise while it continues monitoring.

Microsoft Restricts Edge IE Mode After Active Exploits

🔒 Microsoft has tightened access to Internet Explorer mode in Edge after credible reports in August 2025 that unknown actors abused the legacy compatibility feature to compromise devices. Attackers used social engineering to coerce users into reloading pages in IE mode and then chained unpatched Chakra JavaScript engine exploits to gain remote code execution and elevate privileges. Microsoft removed the IE mode toolbar button, context-menu and hamburger-menu entries; IE mode must now be enabled explicitly via Edge settings and sites must be added to an IE mode pages list.

Apple doubles top RCE bounty to $2M amid new MIE security

🔒 Apple has raised its top bounty for iOS zero‑click system‑level remote code execution from $1 million to $2 million, with additional bonuses for Lockdown Mode bypasses and beta‑stage reports that can push awards above $5 million. The change coincides with the rollout of Memory Integrity Enforcement in A19/A19 Pro chips, which leverages Arm's MTE/EMTE to harden memory safety. Apple will also provide 1,000 iPhone 17 devices to civil society members at risk.

Zero-Day in Gladinet CentreStack and Triofox Exploited

⚠️ Researchers report an actively exploited zero-day (CVE-2025-11371) in Gladinet's CentreStack and Triofox that permits unauthenticated Local File Inclusion (LFI) on default installs, exposing system files and allowing machine-key disclosure. Huntress observed exploitation on Sept 27 with at least three companies targeted. No patch is available yet; Gladinet has issued a workaround to disable a temp handler in the UploadDownloadProxy Web.config, though this may affect some functionality.

Aisuru Botnet Floods U.S. ISPs in Record DDoS Attack

🛰️ Aisuru, now the world’s largest IoT botnet, is drawing the majority of its attack volume from compromised consumer devices hosted by U.S. ISPs such as AT&T, Comcast and Verizon. In early October the botnet briefly generated a near‑30 terabit-per-second traffic flood, underscoring its rapidly expanding scale and destructive reach. The attacks have targeted gaming-focused networks and protection providers, causing widespread collateral congestion and forcing providers to reassess outbound mitigation. Built on Mirai-derived code, Aisuru is also being marketed as a residential proxy service, complicating attribution and remediation.

Google: Clop Exfiltrated Data via Oracle E-Business Flaw

🔍 Google Threat Intelligence and Mandiant report the Clop (FIN11) actor likely exfiltrated a significant amount of data from Oracle E-Business Suite environments beginning as early as August 9, 2025. The group sent extortion emails to executives from September 29 and supplied legitimate file listings to substantiate claims. Attackers exploited the zero-day CVE-2025-61882 prior to an emergency patch released on October 4, 2025. Investigators advise urgent patching, hunting for malicious templates, restricting outbound EBS traffic, and performing Java memory forensics.

Active Exploitation: Gladinet CentreStack LFI → RCE Bug

⚠️ Huntress reports active exploitation of an unauthenticated LFI zero-day, CVE-2025-11371, affecting Gladinet CentreStack and TrioFox up to version 16.7.10368.56560. The flaw permits disclosure of server files, including Web.config, enabling attackers to extract a hard-coded machine key that can enable a prior ViewState deserialization RCE (CVE-2025-30406). As an interim mitigation, Huntress recommends disabling the UploadDownloadProxy 'temp' handler in Web.config until a vendor patch is available.

Cl0p-Linked Actors Exploit Oracle E-Business Suite

🔔 Google Threat Intelligence Group and Mandiant report a multi-stage zero-day campaign exploiting Oracle E-Business Suite (tracked as CVE-2025-61882, CVSS 9.8) that has impacted dozens of organizations since August 2025. The attackers combined SSRF, CRLF injection, authentication bypass and XSL template injection to achieve remote code execution and deploy multi-stage Java loaders. Observed payloads include GOLDVEIN.JAVA and a SAGEGIFT/SAGELEAF/SAGEWAVE chain; orchestration and extortion messaging bear the Cl0p signature. Oracle has released patches and investigations by GTIG and Mandiant are ongoing.

Oracle EBS Zero-Day Exploitation and Extortion Campaign

⚠️ GTIG and Mandiant tracked a large-scale extortion campaign beginning Sept. 29, 2025, in which actors claiming affiliation with the CL0P brand alleged theft from Oracle E‑Business Suite (EBS) environments. Analysis indicates exploitation of a zero-day (CVE-2025-61882) as early as Aug. 9, 2025, with suspicious activity dating back to July 10. Attackers abused UiServlet and SyncServlet flows, embedding Java payloads via XSL templates to achieve unauthenticated RCE and deploy in-memory implants. Organizations are urged to apply Oracle emergency patches, hunt for malicious templates in XDO_TEMPLATES_B/XDO_LOBS, and restrict outbound traffic to disrupt C2.

ThreatsDay: Teams Abuse, MFA Hijack, $2B Crypto Heist

🛡️ Microsoft and researchers report threat actors abusing Microsoft Teams for extortion, social engineering, and financial theft after hijacking MFA with social engineering resets. Separate campaigns use malicious .LNK files to deliver PowerShell droppers and DLL implants that establish persistent command-and-control. Analysts also link over $2 billion in 2025 crypto thefts to North Korean‑linked groups and identify AI-driven disinformation, IoT flaws, and cloud misconfigurations as multiplying risk. Defenders are urged to harden identity, secure endpoints and apps, patch exposed services, and limit long-lived cloud credentials.

AI-Powered Cyberattacks Escalate Against Ukraine in 2025

🔍 Ukraine's SSSCIP reported a sharp rise in AI-enabled cyber operations in H1 2025, documenting 3,018 incidents versus 2,575 in H2 2024. Analysts found evidence that attackers used AI not only to craft phishing lures but also to generate malware samples, including a PowerShell stealer identified as WRECKSTEEL. Multiple UAC clusters—such as UAC-0219, UAC-0218, and UAC-0226—deployed stealers and backdoors via booby-trapped archives, SVG attachments, and ClickFix-style tactics. The report also details zero-click exploitation of Roundcube and Zimbra flaws and widespread abuse of legitimate cloud and collaboration services for hosting and data exfiltration.

Autonomous AI Hacking: How Agents Will Reshape Cybersecurity

⚠️ AI agents are increasingly automating cyberattacks, performing reconnaissance, exploitation, and data theft at machine speed and scale. In 2023 examples include XBOW's mass vulnerability reports, DARPA teams finding dozens of flaws in hours, and reports of adversaries using Claude and HexStrike-AI to orchestrate ransomware and persistent intrusions. This shift threatens accelerated attacks beyond traditional patch cycles while presenting new defensive opportunities such as AI-assisted vulnerability discovery, VulnOps, and even self-healing networks.

ShinyHunters Launch Extortion Site Targeting Corporates

🔓 A cybercrime collective known as ShinyHunters has launched a public extortion blog threatening to publish data stolen from dozens of major companies if ransoms are not paid. The group claims to have harvested Salesforce customer records via a May voice-phishing campaign, and also says it exfiltrated terabytes of files from a Red Hat GitLab server and Discord user data tied to a third-party provider. Security firms and affected vendors including Salesforce, Red Hat and Discord are investigating, while Google and other investigators link the activity to several related UNC clusters and warn of additional token thefts tied to Salesloft. Victim shaming, published exploit scripts for an Oracle E-Business Suite zero-day, and malware-laced threats have amplified the incident’s severity.

Oracle EBS Zero-Day Exploited by Clop Since August

🔒 CrowdStrike reports the Clop ransomware gang has been exploiting an Oracle E-Business Suite zero-day, CVE-2025-61882, since early August to steal sensitive documents. The flaw resides in the BI Publisher Integration of Concurrent Processing and allows unauthenticated remote code execution via a single HTTP request. Oracle issued a patch and warned customers to apply updates immediately as extortion emails tied to stolen EBS data are being circulated.

NCSC Urges Patch for Critical Oracle E-Business Bug

🔔 The UK's National Cyber Security Centre has urged Oracle E-Business Suite customers to apply an emergency update for CVE-2025-61882, a critical unauthenticated remote code execution vulnerability in the BI Publisher Integration component affecting EBS 12.2.3–12.2.14. Security firm Mandiant reports the Clop ransomware group exploited the bug as a zero-day in August, and the exploit has since been leaked, raising the risk of wider attacks. The NCSC and Rapid7 recommend immediate compromise assessments using Oracle's IoCs, contacting Oracle PSIRT and the NCSC if compromise is suspected, installing the latest EBS update (with the October 2023 CPU applied first), and reducing internet exposure of EBS instances.

Microsoft: Critical GoAnywhere Flaw Used in Ransomware

⚠️ Microsoft warns that a critical deserialization vulnerability, CVE-2025-10035, in Fortra's GoAnywhere MFT License Servlet Admin Console is being actively exploited in ransomware campaigns. The flaw (CVSS 10.0) enables attackers to bypass signature verification and deserialize attacker-controlled objects, potentially resulting in command injection and remote code execution on internet-exposed instances. Customers are urged to apply Fortra's patch, harden perimeter controls and run endpoint defenses in block mode to detect and stop post-breach activity.

Critical GoAnywhere MFT Flaw Exploited in Medusa Attacks

⚠️ Microsoft warns that a critical deserialization vulnerability in GoAnywhere MFT (CVE-2025-10035) has been actively exploited by a Medusa ransomware affiliate tracked as Storm-1175 since early September. The License Servlet flaw enables remote compromise without user interaction, allowing attackers to gain initial access and persist via abused RMM tools. Administrators should apply Fortra's patches and inspect logs for SignedObject.getObject stack traces.

Oracle issues emergency patch for EBS zero-day RCE

🔴 Oracle has released an emergency patch addressing a critical zero-day remote code execution flaw, CVE-2025-61882, in the E-Business Suite BI Publisher Integration component. The vulnerability (affecting versions 12.2.3–12.2.14) is rated 9.8 on the CVSS scale and is exploitable remotely without authentication. Cl0p actors are linked to active exploitation and high-value extortion demands; Oracle published IoCs and strongly urges immediate patching and aggressive compromise hunting.

Zeroday Cloud contest: $4.5M bounties for cloud tools

🔐 Zeroday Cloud is a new hacking competition focused on open-source cloud and AI tools, offering a $4.5 million bug bounty pool. Hosted by Wiz Research with Google Cloud, AWS, and Microsoft, it takes place December 10–11 at Black Hat Europe in London. The contest features six categories covering AI, Kubernetes, containers, web servers, databases, and DevOps, with bounties ranging from $10,000 to $300,000. Participants must deliver complete compromises and register via HackerOne.

Cl0p Exploits Critical Oracle E-Business Suite Flaw

🔒 Oracle released an emergency patch to address a critical unauthenticated vulnerability in E-Business Suite (CVE-2025-61882) with a CVSS score of 9.8. The flaw allows remote code execution against the Oracle concurrent processing component over HTTP and has been actively exploited by the Cl0p group in large-scale data theft. Security firms report mass email-based distribution from hundreds of compromised accounts and recommend immediate patching and forensic checks for listed IoCs and suspicious GET/POST activity.