All news with #active exploitation tag

🔥 The RondoDox botnet has been observed exploiting the critical React2Shell flaw (CVE-2025-55182) to compromise vulnerable Next.js servers and deploy malware, including coinminers and Mirai-like components. CloudSEK reports scanning began on December 8 with active deployments starting December 11, and Shadowserver counts over 94,000 exposed assets. The botnet also conducts hourly IoT exploitation waves to enroll routers and uses loaders that remove competing malware and enforce persistence.

⚠️ CISA has added CVE-2025-14847, an MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency vulnerability, to the KEV Catalog after evidence of active exploitation. The designation signals a significant risk to the federal enterprise under BOD 22-01, which requires Federal Civilian Executive Branch agencies to remediate listed vulnerabilities by their due dates. Although BOD 22-01 applies to FCEB agencies, CISA strongly urges all organizations to prioritize timely remediation as part of routine vulnerability management and will continue adding qualifying CVEs to the catalog.

🔒 Fortinet warns that attackers continue to exploit a critical FortiOS vulnerability (CVE-2020-12812) that can bypass two-factor authentication on FortiGate SSL VPNs by changing the case of the username. The issue affects configurations where local users requiring FortiToken are linked to LDAP groups and stems from inconsistent case-sensitive matching between local and remote authentication. Fortinet patched the bug in July 2020 and advised disabling username case sensitivity or removing secondary LDAP group fallbacks if patches cannot be deployed; the vendor reports ongoing abuse against appliances with LDAP configured.

⚠️ React 19 was hit by React2Shell, a critical unauthenticated RCE in React Server Components. The flaw allows arbitrary code execution on servers via crafted requests and affects default React and Next.js deployments. Multiple vendors, including Google and AWS, reported active exploitation within hours; patches are available. Defenders should validate exposure beyond version checks and hunt for backdoors, tunneling, and unexpected child processes.

⚠ A newly disclosed vulnerability, CVE-2025-14847 (dubbed MongoBleed), is being actively exploited to leak sensitive data from MongoDB server memory. The flaw in zlib-based network message decompression lets unauthenticated attackers send malformed compressed packets to read uninitialized heap memory before authentication. Researchers report over 87,000 potentially vulnerable instances worldwide and widespread exposure in cloud environments. Administrators should apply published patches, disable zlib compression as a temporary mitigation, restrict network exposure, and monitor for anomalous pre-auth connections.

🔓 A critical MongoDB vulnerability, tracked as CVE-2025-14847 and dubbed MongoBleed, is being actively exploited to leak in-memory secrets from exposed servers. A public PoC demonstrates how malformed zlib-compressed network messages cause the server to return allocated memory rather than decompressed lengths, exposing credentials, API keys, session tokens, and other sensitive data. Over 87,000 instances were identified as potentially vulnerable on the public internet, and vendors released patches on December 19; administrators should prioritize upgrades or disable zlib compression if immediate upgrades are not possible.

⚠ MongoDB has issued an urgent advisory for CVE-2025-14847 after researchers identified a high-severity bug in zlib-compressed protocol headers that can cause mismatched length fields. The flaw allows unauthenticated attackers to read uninitialized heap memory and could be chained to execute arbitrary code and gain control of a server. MongoDB recommends immediate upgrades to patched releases and, if unable to update, disabling zlib compression as a temporary mitigation.

⚠️ Fortinet warned on December 24, 2025 that attackers are actively abusing a five‑year‑old FortiOS SSL VPN flaw, CVE-2020-12812 (CVSS 5.2), to bypass two‑factor authentication under specific configurations. The issue stems from inconsistent case sensitivity between FortiGate local users and LDAP directories: if a username's case does not exactly match the local entry, FortiGate may fall back to LDAP and accept credentials without 2FA. Fortinet reiterated prior patches and published configuration mitigations and commands to disable username case sensitivity, and advised customers to contact support and reset credentials if unauthorized 2FA bypass is detected.

⚠️ CISA has added a vulnerability affecting Digiever DS-2105 Pro network video recorders to its Known Exploited Vulnerabilities catalog after evidence of active exploitation. Tracked as CVE-2023-52163 (CVSS 8.8), the issue is a post-authentication command injection via time_tzsetup.cgi that can enable remote code execution. The device is end-of-life and unpatched; vendors and researchers note attacks delivering botnets like Mirai and ShadowV2. Users are advised to avoid exposing affected NVRs to the internet, change default credentials, apply compensating controls, and follow agency guidance ahead of the January 12, 2025 FCEB mitigation deadline.

🔔 MongoDB warned IT administrators to immediately apply fixes for a high-severity remote code execution vulnerability tracked as CVE-2025-14847. The flaw is caused by improper handling of a zlib compressed protocol header length, enabling unauthenticated attackers to execute arbitrary code in low-complexity attacks. MongoDB lists numerous affected releases and recommends upgrading to fixed versions such as 8.2.3, 8.0.17, 7.0.28, 6.0.27, 5.0.32, and 4.4.30. If an immediate upgrade is not possible, administrators should disable zlib compression by starting mongod or mongos with networkMessageCompressors or net.compression.compressors options that omit zlib.

⚠️ CISA has added CVE-2023-52163 — a missing authorization flaw in Digiever DS-2105 Pro — to its Known Exploited Vulnerabilities (KEV) Catalog after observing evidence of active exploitation. BOD 22-01 requires Federal Civilian Executive Branch agencies to remediate cataloged vulnerabilities by specified due dates, and CISA emphasizes this entry represents a common and significant attack vector. While the binding directive applies to FCEB agencies, CISA strongly urges all organizations to prioritize timely remediation and incorporate this KEV into their vulnerability management processes.

🔒 Shadowserver has identified more than 25,000 Fortinet devices online with FortiCloud SSO enabled, amid active exploitation of a critical authentication bypass (CVE-2025-59718/CVE-2025-59719). Researchers report attackers send malicious SAML messages to perform unauthorized SSO, gain admin-level access, and download system configuration files containing hashed credentials, exposed services, and network details. CISA added the flaw to its list of actively exploited vulnerabilities and ordered U.S. agencies to patch within a week; Fortinet notes FortiCloud SSO is only enabled after device registration, but many management interfaces remain publicly reachable.

🔔 CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog: CVE-2025-14733, an Out-of-Bounds Write vulnerability affecting WatchGuard Firebox. The agency says there is evidence of active exploitation and highlights that BOD 22-01 requires Federal Civilian Executive Branch agencies to remediate KEV entries by their due dates. CISA also urges all organizations to prioritize timely remediation to reduce exposure to active threats.

🔒 WatchGuard has released updates to remediate a critical vulnerability (CVE-2025-14733, CVSS 9.3) in Fireware OS that enables remote unauthenticated code execution via an out-of-bounds write in the iked process. The flaw impacts IKEv2 mobile user VPNs and branch office VPNs configured with dynamic gateway peers, and the vendor reports observed exploitation attempts in the wild. WatchGuard published fixed releases, IoCs, and temporary mitigations; administrators should apply updates immediately.

⚠️ Cisco Talos has identified an active campaign exploiting a zero-day in AsyncOS, impacting Cisco Secure Email Gateway, Cisco Secure Email and Web Manager. The flaw targets systems with the spam quarantine feature enabled and has been active since at least late November; a vendor patch is not yet available. Cisco currently recommends wiping and rebuilding compromised devices, and analysts urge restricting access to management ports and deploying compensating controls while organizations plan remediation.

🔒 WatchGuard has issued an urgent advisory for a critical remote code execution vulnerability (CVE-2025-14733) affecting Firebox appliances running Fireware OS 11.x, 12.x and 2025.1 releases. The flaw enables unauthenticated attackers to execute code via an out-of-bounds write when IKEv2 VPN is enabled. WatchGuard reports active exploitation in the wild and provides a temporary workaround for Branch Office VPN configurations where immediate patching is not possible. Administrators are urged to apply vendor updates and review provided indicators of compromise.

🚨 React2Shell (CVE-2025-55182) is a critical pre-authentication remote code execution flaw affecting React Server Components, Next.js and related frameworks. Exploitable with a single crafted HTTP request that targets the Flight protocol, the bug lets attackers inject and execute arbitrary server-side components, enabling backdoors, crypto miners and ransomware deployment. Researchers at S-RM and the Microsoft Defender team warn default configurations are vulnerable and note some early patches were incomplete; organizations should urgently verify fully patched versions and run forensic checks.

🔴 HPE has issued an urgent advisory for HPE OneView after disclosure of a maximum-severity remote code execution flaw, CVE-2025-37164, that can be triggered by unauthenticated remote actors. The vulnerability affects OneView versions 5.20 through 10.20 and requires an immediate security hotfix. HPE provides separate hotfixes for the virtual appliance and for HPE Synergy Composer; administrators should apply the fixes promptly and, until remediation, restrict management-interface access to trusted administrative networks.

🔒 The Clop ransomware gang is actively targeting Internet-exposed Gladinet CentreStack file servers in a new extortion campaign, with incident responders reporting ransom notes on compromised systems. Gladinet has issued multiple security updates since April to address several flaws, some disclosed as zero-days. It remains unclear whether Clop is exploiting a fresh zero-day or targeting unpatched instances. Threat data shows 200+ IPs exposing CentreStack login pages and potentially at risk.

⚠️ CISA has added a critical vulnerability (CVE-2025-59374, CVSS 9.3) in ASUS Live Update to its Known Exploited Vulnerabilities catalog after identifying evidence of active exploitation tied to a supply-chain compromise. The flaw stems from trojanized installer builds distributed during the 2018 Operation ShadowHammer campaign that could make targeted devices perform unintended actions. ASUS previously remediated the issue in v3.6.8, but the vendor has since declared the client end-of-support; federal agencies are urged to discontinue use by January 7, 2026.