All news in category "Security Advisory and Patch Watch"

Supporting Rowhammer Research to Strengthen DDR5 Mitigations

🔬 Google funded and collaborated on open-source DDR5 Rowhammer test platforms and academic research to evaluate current in-DRAM mitigations. Working with Antmicro and ETH Zurich, the team produced FPGA-based RDIMM and SO‑DIMM testers and used them to discover the Phoenix attack family, which includes a self-correcting refresh synchronization technique that can bypass enhanced TRR on some DDR5 modules. Google also led JEDEC standardization work on PRAC to enable deterministic row-activation counting and continues to share tools and findings to improve defenses.

Microsoft removes upgrade block for Windows 11 audio

🔧 Microsoft has removed a safeguard hold that blocked upgrades to Windows 11 24H2 on devices running Dirac audio enhancement software after reports that the component cridspapo.dll caused integrated speakers and Bluetooth audio devices to stop working. A new driver is available via Windows Update and Microsoft recommends installing the latest security update; restarting the device may speed the offering. The safeguard hold was lifted on September 11, 2025, but other upgrade blocks remain for unrelated driver and software incompatibilities.

Microsoft: September Windows Updates Break SMBv1 Shares

⚠️Microsoft confirmed that the September 2025 Windows security updates can break connections to SMBv1 shares when NetBIOS over TCP/IP (NetBT) is used. The issue affects client releases (Windows 11 24H2/23H2/22H2, Windows 10 22H2/21H2) and server releases (Windows Server 2025, 2022) and may occur if either the SMB client or server has the update. As a temporary workaround, administrators are advised to allow SMB traffic on TCP port 445 so Windows can switch from NetBT to TCP. Microsoft is investigating and developing a fix.

Samsung image library flaw enables zero-click RCE exploit

📸 Samsung disclosed a critical remote code execution vulnerability in a closed-source image-parsing library, libimagecodec.quram.so, supplied by Quramsoft that affects devices running Android 13–16. The out-of-bounds write (CVE-2025-21043, CVSS 8.8) can be triggered by a specially crafted image and has been exploited in the wild. Messaging apps are a likely vector and the flaw can operate as a zero-click backdoor. Samsung released an SMR Sep-2025 Release 1 patch; enterprises should prioritize deployment.

VMScape: Spectre-BTI Variant Breaks VM Isolation in VMs

🔒 Researchers have demonstrated VMScape, a Spectre-like branch target injection attack that breaks guest-to-host isolation on AMD and Intel CPUs in virtualized environments. The proof-of-concept targeted KVM/QEMU in its default configuration and extracted host disk encryption keys from an AMD Zen 4 system. Tracked as CVE-2025-40300, mitigations include inserting an Indirect Branch Prediction Barrier (IBPB) on VMEXIT, which maintainers report causes only marginal performance impact. The vulnerability highlights that existing Spectre-BTI defenses and microcode updates are insufficient in some virtualized deployments, particularly on AMD Zen microarchitectures.

CISA Warns of Active Exploitation of Dassault RCE Now

⚠ CISA has added a critical remote code execution flaw in DELMIA Apriso to its Known Exploited Vulnerabilities list as CVE-2025-5086, warning that attackers are actively exploiting the issue. The vulnerability is a deserialization of untrusted data that can lead to RCE when vulnerable endpoints process crafted SOAP requests containing a Base64-encoded, GZIP-compressed .NET executable embedded in XML. Dassault Systèmes confirmed the bug affects Releases 2020–2025; CISA has given federal agencies until October 2 to apply updates or mitigations or to cease using the product.

Samsung fixes libimagecodec zero-day CVE-2025-21043

⚠️ Samsung released its monthly Android security update addressing a critical zero-day, CVE-2025-21043, a high-severity (CVSS 8.8) out-of-bounds write in libimagecodec.quram.so that can enable remote arbitrary code execution. The company says the flaw affects Android 13–16 and was privately disclosed on August 13, 2025. The affected library is a closed-source image parser from Quramsoft and the patch corrects an incorrect implementation. Samsung acknowledged an exploit exists in the wild but did not provide attack specifics.

HybridPetya Bootkit Bypasses Secure Boot on UEFI Systems

🔒 ESET researchers identified HybridPetya, a new ransomware strain that blends Petya-style MFT encryption with a UEFI bootkit that can bypass Secure Boot by abusing a patched flaw (CVE-2024-7344) in the Howyar Reloader EFI component. The malware installs a malicious EFI application, uses a three-state flag to track encryption and ransom status, displays a fake CHKDSK screen, and demands $1,000 in Bitcoin. Select variants load a cloak.dat payload into reloader.efi to evade integrity checks; Microsoft revoked the vulnerable binary via dbx updates. ESET found no evidence of widespread active abuse but warned Secure Boot bypasses are increasingly common and urged prompt patching and boot integrity monitoring.

DELMIA Apriso critical CVE-2025-5086 enables RCE in the wild

⚠️ CISA added a critical deserialization vulnerability, CVE-2025-5086, affecting Dassault Systèmes DELMIA Apriso Manufacturing Operations Management (MOM) releases 2020–2025 to its KEV catalog following evidence of active exploitation. The flaw can allow remote code execution via the /apriso/WebServices/FlexNetOperationsService.svc/Invoke endpoint when attackers send a Base64 payload that decodes to a GZIP-compressed Windows DLL. Observed attacks delivered a DLL identified by Kaspersky as Trojan.MSIL.Zapchast.gen, capable of spying and exfiltrating data. FCEB agencies are urged to apply updates by October 2, 2025, to secure their networks.

Samsung patches actively exploited zero-day in image codec

🔒 Samsung has released a patch for a critical remote code execution vulnerability tracked as CVE-2025-21043 that was actively exploited on Android devices. Reported by Meta and WhatsApp security teams on August 13, the flaw stems from an out-of-bounds write in libimagecodec.quram.so, a closed-source Quramsoft image parser, and affects devices running Android 13 and later. Samsung’s advisory notes an exploit was observed in the wild and that other messaging apps using the vulnerable library could also be at risk; users should apply the September SMR update promptly.

Cursor Code Editor Flaw Enables Silent Code Execution

⚠ Cursor, an AI-powered fork of Visual Studio Code, ships with Workspace Trust disabled by default, enabling VS Code-style tasks configured with runOptions.runOn: 'folderOpen' to auto-execute when a folder is opened. Oasis Security showed a malicious .vscode/tasks.json can convert a casual repository browse into silent arbitrary code execution with the user's privileges. Users should enable Workspace Trust, audit untrusted projects, or open suspicious repos in other editors to mitigate risk.

VMScape: Spectre-like VM-to-host data leak on CPUs

🔓 Researchers at ETH Zurich disclosed VMScape, a Spectre-like speculative-execution attack that lets a malicious VM extract secrets from an unmodified QEMU hypervisor running on many modern AMD and some Intel CPUs. The exploit abuses shared branch-prediction structures and a FLUSH+RELOAD side channel to induce speculative disclosure. It works without host compromise and bypasses default mitigations; vendors and Linux developers released advisories and kernel patches to mitigate the issue.

Siemens SIVaaS Network Share: Authentication Flaw (Critical)

⚠️A critical vulnerability (CVE-2025-40804) affects Siemens SIMATIC Virtualization as a Service (SIVaaS), exposing a network share without authentication and allowing remote actors to access or modify sensitive data. Calculated scores are CVSS v4 9.3 and CVSS v3.1 9.1 with low attack complexity. Siemens advises contacting Technical Support; CISA recommends isolating control systems, minimizing internet exposure, and using layered defenses.

Siemens RUGGEDCOM RST2428P: Security Advisory and Mitigations

🛡️ CISA republished information from Siemens ProductCERT regarding two vulnerabilities affecting the RUGGEDCOM RST2428P (6GK6242-6PA00). The issues — uncontrolled resource consumption (CVE-2025-40802) and exposure of sensitive information (CVE-2025-40803) — are exploitable from an adjacent network and have low CVSS scores (v3.1=3.1; v4=2.3). Siemens recommends firewalling UDP discovery ports and following industrial security guidance; CISA advises minimizing network exposure and isolating control networks.

Siemens Apogee PXC/Talon TC Sensitive Data Exposure

🔒 Siemens reported a vulnerability in Apogee PXC and Talon TC devices that allows unauthorized actors to download device database files via BACnet. Affected devices permit unauthenticated access to encrypted .db files that can contain passwords; the issue is tracked as CVE-2025-40757 with a CVSS v4 base score of 6.3. Siemens and CISA recommend changing default passwords, hardening network access, and isolating control networks. Exploitation is remotely feasible with low complexity; no public exploitation has been reported to CISA.

Schneider Electric EcoStruxure Vulnerabilities and Fixes

⚠️ CISA published an advisory on two vulnerabilities in Schneider Electric EcoStruxure products that could enable a denial-of-service condition and the exposure of sensitive credentials. The issues are tracked as CVE-2025-8449 (uncontrolled resource consumption) and CVE-2025-8448 (sensitive information exposure). Affected Enterprise Server and Workstation versions should be updated to the fixed releases (for example 7.0.2.348, 6.0.4.10001 (CP8), 5.0.3.17009 (CP16)). If patches cannot be applied immediately, implement strong access controls, network segmentation, MFA where available, and continuous monitoring.

CISA Issues Eleven Industrial Control Systems Advisories

🔔 CISA released eleven Industrial Control Systems (ICS) advisories on September 11, 2025, offering timely technical details about vulnerabilities, exploits, and mitigations. The advisories span multiple vendors and product families, including Siemens (SIMOTION Tools, SIMATIC SIVaaS, SINAMICS, SINEC OS, Industrial Edge, UMC, Apogee PXC/Talon TC), Schneider Electric (EcoStruxure, Modicon M340 variants), and Daikin (Security Gateway). Administrators and asset owners are urged to review the advisories, apply vendor patches or recommended mitigations, and strengthen segmentation and monitoring to reduce operational risk.

CISA Adds One Vulnerability to KEV Catalog (2025-09-11)

🔔 CISA added CVE-2025-5086 — a Dassault Systèmes DELMIA Apriso deserialization of untrusted data vulnerability — to its Known Exploited Vulnerabilities (KEV) Catalog on September 11, 2025, based on evidence of active exploitation. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate KEV-listed issues by required due dates. CISA urges all organizations to prioritize timely remediation as part of vulnerability management and will continue updating the catalog with vulnerabilities that meet its criteria.

Siemens SINAMICS Drives Privilege Management Vulnerability

🔒 Siemens SINAMICS drive firmware contains an Improper Privilege Management vulnerability (CVE-2025-40594) that can allow local network users to escalate privileges and perform a factory reset without required rights. A CVSS v3.1 base score of 6.3 and a CVSS v4 base score of 6.9 were calculated. Siemens provides updates for S210 and G220 (V6.4 HF2); S200 V6.4 currently has no fix. CISA and Siemens recommend minimizing network exposure, isolating control networks, and using secure remote access methods.

Siemens IEM-OS DoS Vulnerability (CVE-2025-48976) Advisory

⚠️ Siemens Industrial Edge Management OS (IEM-OS) contains an allocation-of-resources vulnerability in Apache Commons FileUpload that can be triggered remotely to cause a denial-of-service condition. The issue is tracked as CVE-2025-48976 with a CVSS v4 base score of 8.7 and a CVSS v3.1 vector indicating an availability-only impact. Siemens reports all IEM-OS versions affected and recommends migrating to IEM-V, limiting access to trusted systems, and following Siemens' operational security guidance. CISA reiterates minimizing network exposure, using network segmentation and firewalls, and employing secure remote access methods.