All news with #active exploitation tag

Critical Post SMTP WordPress Plugin Flaw Enables Takeover

⚠️ A critical vulnerability in the popular Post SMTP WordPress plugin, which has more than 400,000 active installations, allowed unauthenticated attackers to read email logs — including password reset messages — and change any user password, enabling full account and site takeover. Wordfence reported active exploitation and urged immediate updates after detecting thousands of automated attacks. Administrators should install the patched release or disable the plugin immediately to prevent compromise.

UNK_SmudgedSerpent Targets Academics and Policy Experts

🛡️ Proofpoint has identified a previously unknown cluster it calls UNK_SmudgedSerpent that targeted academics and foreign policy experts between June and August 2025. Attackers initiated benign, topical conversations and used think‑tank impersonation alongside an OnlyOffice‑styled link that led to health-themed domains harvesting credentials and delivering a ZIP with an MSI. The installer deployed remote monitoring and management tooling — notably PDQConnect and later ISL Online — and although email activity paused in early August, related infrastructure later surfaced hosting TA455-linked malware, leaving attribution unresolved.

CISA Adds Gladinet, CWP Flaws to KEV After Exploits

🚨 CISA added two vulnerabilities affecting Gladinet CentreStack/Triofox and Control Web Panel (CWP) to its Known Exploited Vulnerabilities (KEV) catalog after evidence of active exploitation. CVE-2025-11371 (CVSS 7.5) can expose files or directories to external parties, while CVE-2025-48703 (CVSS 9.0) is an OS command injection enabling remote code execution via the t_total parameter. Huntress reported live reconnaissance activity against Gladinet, and Federal civilian agencies must remediate by November 25, 2025.

Hackers Exploit Post SMTP Plugin to Hijack Admin Accounts

⚠️ WordPress sites using Post SMTP (≤3.6.0) are under active attack after disclosure of CVE-2025-11833, a critical (9.8) email log disclosure that lets unauthenticated actors read password-reset messages and hijack administrator accounts. A vendor patch, Post SMTP 3.6.1, was released Oct 29, but roughly 210,000 sites remain unpatched. Wordfence observed exploitation beginning Nov 1 and has blocked over 4,500 attempts; site owners should update or disable the plugin immediately.

DragonForce Emerges as Conti-Derived Ransomware Cartel

🛡️DragonForce, a ransomware operation built from leaked Conti source code, has restructured into a self-styled cartel that recruits affiliates and encourages branded variants. Researchers at Acronis report it retains Conti’s ChaCha20/RSA encryption, SMB-based network spreading, and multiple encryption modes while employing a hidden configuration system. Operators have pursued aggressive tactics — including defacing rival leak sites and aligning with access brokers like Scattered Spider — and have threatened victims with decryptor deletion and data leaks.

CISA Adds Two Vulnerabilities to KEV Catalog — Nov 2025

🔔 CISA added two vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog: CVE-2025-11371 affecting Gladinet CentreStack and Triofox (files or directories exposed to external parties), and CVE-2025-48703 affecting CWP Control Web Panel (OS command injection). These entries reflect evidence of active exploitation and elevated risk. CISA urges timely remediation under BOD 22-01 and recommends organizations prioritize patching, mitigations, and compensating controls.

Balancer DeFi Protocol Loses Over $120M in Cyber Heist

🔐 Balancer, an Ethereum automated market maker, has been hit by a sophisticated exploit of its V2 Composable Stable Pools, with estimated losses exceeding $120 million. The team says pools that could be paused have been placed into recovery mode while it works with leading security researchers to investigate. Early analysis suggests a 'rounding down' precision loss in the Balancer Vault calculations was exploited and amplified via the batchSwap function. Balancer confirmed V3 pools were not affected and warned users about related phishing scams.

Balancer V2 Exploit Drains Over $120 Million in Crypto

🚨 Balancer announced an exploit of its V2 Compostable Stable Pools on Ethereum at 07:48 UTC that resulted in reported losses exceeding $128 million. Initial analysis from GoPlus Security points to a precision rounding error in the Vault’s swap calculations that an attacker chained via batchSwap, while other researchers suggest improper authorization and callback handling in V2 vaults. Balancer says the issue is isolated to V2 Compostable Stable Pools, with V3 and other pools unaffected, and the team is working with security researchers on a full post‑mortem. Users are warned to remain vigilant for scams and phishing attempts following the incident.

SesameOp backdoor abuses OpenAI Assistants API for C2

🛡️ Microsoft DART researchers uncovered SesameOp, a novel .NET backdoor that leverages the OpenAI Assistants API as a covert command-and-control (C2) channel instead of traditional infrastructure. The implant includes a heavily obfuscated loader (Netapi64.dll) and a backdoor (OpenAIAgent.Netapi64) that persist via .NET AppDomainManager injection, using layered RSA/AES encryption and GZIP compression to fetch, execute, and exfiltrate commands. Microsoft and OpenAI investigated jointly and disabled the suspected API key; detections and mitigation guidance are provided for defenders.

Microsoft WSUS Patch Disrupted Windows Server Hotpatching

⚠️ An out-of-band update, KB5070881, that addressed CVE-2025-59287 for Windows Server Update Service inadvertently removed Hotpatch enrollment on a very limited number of Windows Server 2025 machines. Microsoft has stopped offering KB5070881 to Hotpatch-enrolled devices and released KB5070893 the next day to fix the flaw without breaking Hotpatch. Systems that installed the buggy update will receive regular monthly security updates requiring restarts in November and December and will rejoin Hotpatch after the January 2026 baseline. As part of mitigations, Microsoft also disabled the display of WSUS synchronization error details.

Cybercriminals Use RMM Tools to Enable Cargo Theft

🚚 Proofpoint researchers report that cybercriminals are compromising transportation firms to facilitate physical cargo theft by abusing remote management and access tools. Attackers use social engineering — including fake load-board listings, email thread hijacking and targeted phishing — to deliver installers that deploy RMM and RAS utilities. Once inside, they perform reconnaissance, harvest credentials with tools such as WebBrowserPassView, and expand access, enabling organized-crime partners to bid on and steal shipments.

Weekly Recap: Lazarus Web3 Attacks and TEE.Fail Risks

🔐 This week's recap highlights a broad set of high‑impact threats, from a suspected China‑linked intrusion exploiting a critical Motex Lanscope flaw to deploy Gokcpdoor, to North Korean BlueNoroff campaigns targeting Web3 executives. Researchers disclosed TEE.fail, a low‑cost DDR5 side‑channel that can extract secrets from Intel and AMD TEEs. Also noted: human‑mimicking Android banking malware, WSL‑based ransomware tactics, and multiple high‑priority CVEs.

Hacktivists Target Internet-Exposed Industrial Controls

⚠️ The Canadian Centre for Cyber Security warns hacktivists are increasingly exploiting internet-accessible industrial control systems (ICS), citing recent intrusions that affected a water utility, an oil and gas automated tank gauge (ATG), and a farm's grain-drying silo. Attackers manipulated pressure, fuel-gauge, and environmental controls, creating safety and service disruptions. The alert urges secure remote access via VPNs with MFA and inventories of OT assets. Provincial and municipal coordination is recommended to protect sectors lacking cybersecurity oversight.

China-Linked 'Bronze Butler' Exploits Lanscope Zero-Day

🔒 Sophos researchers discovered China-linked espionage group Bronze Butler exploiting a zero-day in Motex Lanscope Endpoint Manager (CVE-2025-61932) to deploy an updated Gokcpdoor backdoor. The flaw enabled unauthenticated remote code execution as SYSTEM on affected versions (<=9.4.7.2), and attackers used OAED Loader, DLL sideloading, and multiplexed C2 channels to evade detection. Motex released patches on October 20, 2025, and CISA added the vulnerability to its KEV list; organizations are advised to upgrade immediately since no mitigations exist.

ASD Warns of Ongoing BADCANDY Attacks on Cisco IOS XE

🛡️ The Australian Signals Directorate (ASD) has issued a bulletin warning of ongoing attacks using a Lua-based implant dubbed BADCANDY to compromise unpatched Cisco IOS XE devices via CVE-2023-20198. ASD reports variations have been seen since October 2023 and estimates about 400 Australian devices were compromised since July 2025, with 150 infections in October. Operators are urged to apply patches, restrict public access to the web UI, and follow Cisco hardening guidance.

Chinese Hackers Exploit Hard-to-Patch Windows Shortcut Flaw

🛡️Arctic Wolf reports that Chinese government-linked actors, tracked as UNC6384 and linked to the longer-running Mustang Panda cluster, conducted spear-phishing campaigns in September and October targeting diplomats in Hungary, Belgium, Serbia, Italy and the Netherlands by abusing a long-known Windows .LNK shortcut parsing flaw. The vulnerability allows command-line instructions to be concealed in .LNK whitespace so attackers can display decoy PDFs—such as an agenda for a European Commission meeting—while executing payloads that deploy the PlugX remote-access Trojan. Trend Micro and ZDI previously documented the issue (i.e., ZDI-CAN-25373, later CVE-2025-9491), but Microsoft has so far declined to fully patch it; Arctic Wolf advises blocking or disabling .LNK execution, monitoring for related binaries like cnmpaui.exe, and blocking C2 domains as interim mitigations.

China-Linked UNC6384 Exploits Windows LNK Vulnerability

🔒 A China-affiliated group tracked as UNC6384 exploited an unpatched Windows shortcut flaw (ZDI-CAN-25373, CVE-2025-9491) to target diplomatic and government entities in Europe between September and October 2025. According to Arctic Wolf, the campaign used spear-phishing links to deliver malicious LNK files that launch a PowerShell stager, sideload a CanonStager DLL, and deploy the PlugX remote access trojan. Microsoft says Defender detections and Smart App Control can help block this activity.

China-linked Tick exploits Lanscope flaw to deploy backdoor

⚠️ Sophos and JPCERT/CC have linked active exploitation of a critical Motex Lanscope Endpoint Manager vulnerability (CVE-2025-61932, CVSS 9.3) to the China-aligned Tick group. Attackers leveraged the flaw to execute SYSTEM-level commands and drop a Gokcpdoor backdoor, observed in both server and client variants that create covert C2 channels. The campaign used DLL side-loading to run an OAED Loader, deployed the Havoc post-exploitation framework on select hosts, and used tools like goddi and tunneled Remote Desktop for lateral movement. Organizations are advised to upgrade or isolate internet-facing LANSCOPE servers and review deployments of the MR and DA agents.

Chinese-Linked Hackers Exploit Windows Shortcut Flaw

🔎 Researchers at Arctic Wolf Labs uncovered a September–October 2025 cyber-espionage campaign that used a Windows shortcut vulnerability to target Belgian and Hungarian diplomatic entities. The operation, attributed to UNC6384 and likely tied to Mustang Panda (TEMP.Hex), combined spear phishing with malicious .LNK files exploiting ZDI-CAN-25373 and deployed a multi-stage chain ending in the PlugX RAT. Attackers used DLL side-loading, signed Canon utilities and obfuscated PowerShell to extract and execute an encrypted payload while displaying decoy diplomatic PDFs.

Chinese Hackers Exploit Windows LNK Zero-Day to Spy

🔒 A China-linked threat group is exploiting a high-severity Windows .LNK zero-day (CVE-2025-9491) to deploy the PlugX remote-access trojan against European diplomatic targets. The campaign begins with spearphishing that delivers malicious shortcut files themed around NATO and European Commission events. Researchers at Arctic Wolf Labs and StrikeReady attribute the activity to UNC6384 (Mustang Panda) and report the operation has expanded beyond Hungary and Belgium to other EU states. With no official patch available, defenders are urged to restrict .LNK usage and block identified C2 infrastructure.