All news with #authentication bypass tag

🔒 A critical token validation flaw in Microsoft Entra ID could permit full tenant compromise by abusing undocumented, unsigned actor tokens issued by a legacy Access Control Service. Researcher Dirk-jan Mollema showed that when paired with a vulnerability in the deprecated Azure AD Graph API (CVE-2025-55241) those tokens could impersonate any user — including Global Administrators — across tenants without leaving tenant logs. Microsoft confirmed a fix after the July report and later patched the CVE.

⚠️ Westermo disclosed an OS command injection vulnerability in WeOS 5 (CVE-2025-46418) affecting versions 5.24 and later. The flaw arises from unsafe handling of media definitions and can allow an authenticated administrator to inject OS commands and potentially exceed intended privileges. CVSS scores include 7.6 (v3.1) and 8.7 (v4). Vendor and CISA recommend restricting admin access, segmenting networks, and using secure remote access practices as mitigations.

🔒 Cognex disclosed multiple high-severity vulnerabilities in In-Sight Explorer and firmware for the In-Sight 2000/7000/8000/9000 series (versions 5.x through 6.5.1). Identified issues include hard-coded credentials, cleartext management protocols (including telnet and a proprietary TCP 1069 service), weak default permissions, authentication bypass via capture-replay, and insufficient server-side enforcement. CISA assigns high CVSS scores (up to 8.8 v3.1 and 8.6 v4), warns of credential disclosure, configuration manipulation, and potential denial-of-service, and recommends migration to newer In-Sight Vision Suite systems and network isolation.

⚠️ Hitachi Energy disclosed a critical deserialization-of-untrusted-data vulnerability affecting Service Suite (versions prior to 9.6.0.4 EP4) that permits unauthenticated remote access via IIOP or T3 to compromise Oracle WebLogic Server. The issue is tracked as CVE-2020-2883 with a CVSS v4 base score of 9.3 and is characterized as remotely exploitable with low attack complexity. Hitachi Energy advises updating affected instances to version 9.8.2 or the latest release and applying vendor mitigation guidance immediately. CISA additionally recommends minimizing network exposure, isolating control networks behind firewalls, using up-to-date VPNs for remote access, and performing risk and impact assessments prior to deploying defensive changes.

🔁 This AWS blog demonstrates how to automate OIDC client secret rotation for Application Load Balancer authentication using AWS Secrets Manager, AWS Lambda, and Amazon EventBridge. The solution securely stores IdP credentials (Auth0 in the example), schedules a Lambda handler to fetch and compare tokens, and updates Secrets Manager and ALB listener rules when changes occur. It reduces manual effort, limits plaintext credential exposure, and adds monitoring via CloudWatch alarms.

⚠️Security researchers disclosed multiple critical vulnerabilities in Chaos Mesh that allow minimally privileged in-cluster actors to execute fault injections and potentially take over Kubernetes clusters. The issues, grouped as Chaotic Deputy, include an unauthenticated GraphQL debugging endpoint and several operating-system command-injection flaws (CVE-2025-59358 through CVE-2025-59361). Chaos Mesh released a remediation in 2.7.3; administrators should patch immediately or restrict access to the daemon and API server if they cannot upgrade.

⚠️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.

🔓 CISA published an advisory describing an authorization bypass in Daikin Security Gateway devices that abuses a weak password recovery mechanism. The vulnerability, tracked as CVE-2025-10127, is remotely exploitable with low complexity and carries a CVSS v4 score of 8.8; public proof‑of‑concept code exists. Daikin has indicated it will not issue a vendor-wide patch and will handle customer inquiries directly; CISA recommends isolating affected devices, placing them behind firewalls, and using secure, up-to-date VPNs or other hardened remote access controls.

🛡️ ABB has disclosed critical vulnerabilities in its ASPECT, NEXUS, and MATRIX building management and automation products that permit authentication bypass, unauthenticated critical functions, and a classic buffer overflow. Assigned CVEs include CVE-2025-53187, CVE-2025-7677, and CVE-2025-7679 with CVSS v4 scores up to 9.3. ABB resolved CVE-2025-53187 in firmware 3.08.04-s01 and recommends updating affected devices, avoiding direct Internet exposure, restricting network access segments, requiring VPN-based remote access, and changing default credentials to reduce risk.

⚠️ Rockwell Automation has published an advisory for an injection vulnerability in Stratix IOS (≤15.2(8)E5) that could allow an attacker to upload and run malicious configurations without authentication. The issue is tracked as CVE-2025-7350 and carries a CVSS v4 base score of 8.6, with remote exploitability and low attack complexity. Rockwell released an update; users should upgrade to 15.2(8)E6 or later. If updating is not immediately possible, follow vendor best practices and CISA's network-segmentation and access-control recommendations.

📅 iCloud Calendar invites are being abused to send callback phishing emails that appear to originate from Apple's servers and pass SPF, DKIM, and DMARC checks. Attackers embed phishing content in the event Notes and invite a Microsoft 365 forwarding address so the message is relayed to targets while Apple remains the visible sender. Treat unexpected calendar invites with unusual messages or requests cautiously; calling listed numbers or granting remote access can lead to fraud, malware, or data theft.

🔔 CISA has added two TP-Link router vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog after observing in-the-wild exploitation activity. The flaws—CVE-2023-50224 (CVSS 6.5), an authentication bypass via spoofing in the httpd service exposing stored credentials at /tmp/dropbear/dropbearpwd, and CVE-2025-9377 (CVSS 8.6), an OS command injection enabling remote code execution—affect multiple TL-WR841 and Archer C7 models. TP-Link says several affected models are End-of-Life, released firmware updates in November 2024, and recommends upgrading hardware; CISA urges federal agencies to apply mitigations by September 24, 2025.

🔒 The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added a high‑severity flaw in TP‑Link TL‑WA855RE Wi‑Fi range extenders (CVE‑2020‑24363, CVSS 8.8) to its Known Exploited Vulnerabilities catalog after evidence of active exploitation. The missing authentication issue lets an unauthenticated attacker on the same network submit a TDDP_RESET request to factory‑reset the device and set a new administrative password. CISA also added a WhatsApp vulnerability (CVE‑2025‑55177, CVSS 5.4) that was chained with an Apple platform flaw in a targeted spyware campaign; federal agencies must apply mitigations by September 23, 2025.

🔒 WhatsApp has issued emergency updates for iOS and macOS to fix CVE-2025-55177, a high-severity authorization flaw that may have been exploited alongside an Apple ImageIO zero-day (CVE-2025-43300). The bug could allow processing of content from an arbitrary URL on a target device and affects specific iOS, Business iOS, and Mac app versions. Users are urged to update immediately; confirmed targets were advised to perform a full factory reset.

🔒 WhatsApp has patched a zero-click vulnerability (CVE-2025-55177) impacting WhatsApp for iOS prior to 2.25.21.73, WhatsApp Business for iOS v2.25.21.78, and WhatsApp for Mac v2.25.21.78. The flaw involved incomplete authorization of linked-device synchronization messages that could trigger processing of content from an arbitrary URL on a target device. WhatsApp said the bug may have been chained with an Apple OS-level zero-day (CVE-2025-43300) and exploited in targeted, sophisticated attacks. Potentially impacted users have been urged to perform a factory reset and keep their operating systems and apps up to date.

⚠️ CISA added CVE-2025-57819, an authentication bypass in Sangoma FreePBX, to its Known Exploited Vulnerabilities (KEV) Catalog after evidence of active exploitation. The vulnerability is a frequent attack vector that poses significant risk to the federal enterprise. Under BOD 22-01, Federal Civilian Executive Branch agencies must remediate KEV items by required due dates. CISA urges all organizations to prioritize timely remediation.

🔒 Click Studios released Passwordstate 9.9 (Build 9972) on August 28, 2025, to remediate a high-severity authentication bypass that could be triggered via a carefully crafted URL against the product's Emergency Access page. The update also introduces enhanced safeguards in the web interface and browser extension to mitigate DOM-based clickjacking attacks. The company noted that no CVE has been assigned yet and emphasized that customers should apply the update promptly. Passwordstate is used by thousands of organizations globally, increasing the urgency of patching.

⚠️ Google is investigating authentication failures that prevent sign-ins to Clever and ClassLink on affected ChromeOS devices running build 16328.55.0 with Chrome 139.0.7258.137. The problem can disrupt Single Sign‑On and some 2‑Step Verification flows, blocking access to educational platforms. As temporary mitigations, administrators can roll back devices to ChromeOS M138 via the Google Admin console or change LoginAuthenticationBehavior to use the default GAIA authentication flow while Google validates a fix.

⚠️ Mitsubishi Electric's MELSEC iQ-F Series CPU modules are affected by a Missing Authentication for Critical Function vulnerability (CVE-2025-7405) in Modbus/TCP that can allow remote attackers to read and write device values and potentially halt program execution. CISA assigns a CVSS v4 base score of 6.9 and notes the issue is remotely exploitable with low attack complexity. Mitsubishi reports many FX5U/FX5UC/FX5UJ/FX5S variants affected and currently has no fixed version planned. Recommended mitigations include network segmentation, VPNs or firewalls, IP filtering, and restricting physical access.

🔒 This week's recap spotlights a DOM-based extension clickjacking technique disclosed by researcher Marek Tóth at DEF CON that affects popular browser password manager plugins. Vendors including Bitwarden, Dashlane, Enpass, KeePassXC-Browser, Keeper, LastPass, NordPass, ProtonPass, and RoboForm issued fixes by August 22. Other leading stories cover legacy Cisco devices exploited for persistent access, an actively exploited Apple 0-day in ImageIO, cloud intrusions leveraging trusted partner relationships, and several high-risk CVEs to prioritize.