CVE-2025-53771 on DanSec Daily

Cybersecurity Brief – 2025-08-06

Wed, 06 Aug 2025 00:00:00 +0000

Major Incidents or Breaches

Pandora, the Danish jewelry retailer, confirmed a data breach after customer information was stolen in connection with ongoing Salesforce data theft attacks. The company warned customers of potential phishing attempts using their stolen data.
Cisco disclosed a data breach affecting Cisco.com user accounts after a voice phishing (vishing) attack targeted a company representative. Stolen data includes names, email addresses, and phone numbers.
PBS suffered a data breach resulting in the exposure of corporate contact information for employees and affiliates, which was subsequently leaked on Discord servers.

Newly Discovered Vulnerabilities

Google released security updates for Android, addressing six vulnerabilities in its August 2025 update. Two patched Qualcomm vulnerabilities (including an Adreno GPU flaw) were confirmed as actively exploited in the wild.
Adobe issued emergency patches for two zero-day vulnerabilities in Adobe Experience Manager (AEM) Forms on JEE. Proof-of-concept exploit chains allowing unauthenticated remote code execution had been published.
CISA added three legacy D-Link router vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog following reports of active exploitation.
A critical vulnerability (CVE-2025-54136, “MCPoison”) was disclosed in the Cursor AI-powered code editor, enabling persistent remote code execution via malicious MCP file swaps post-approval. This flaw poses a software supply chain risk.
SonicWall warned administrators to disable SSLVPN on Gen 7 firewalls amid a surge in ransomware attacks exploiting a suspected zero-day vulnerability. The company is actively investigating.
Public exploits for Microsoft SharePoint vulnerabilities (CVE-2025-53770, CVE-2025-53771) have been observed in the wild, with attackers reportedly stealing machine keys.

Notable Threat Actor Activity

A widespread phishing campaign is targeting Instagram users with fake notifications about failed login attempts, aiming to harvest credentials.
A global campaign leveraging 15,000 fake TikTok Shop domains is distributing malware and stealing cryptocurrency via AI-driven scams. Threat actors are using trojanized apps and credential theft tactics.
ClickFix social engineering attacks, which employ CAPTCHAs and sophisticated narratives to evade detection, have seen increased adoption over the past year, facilitating cross-platform malware infections.
Ransomware gangs are suspected of exploiting a SonicWall firewall zero-day in recent attacks.
The cybercrime underground continues to rely heavily on traditional attack methods, including phishing and social engineering, despite increasing professionalization and organisation.

Trends, Tools, or Tactics of Interest

Automated and AI-driven adversarial testing is gaining prominence, with vendors showcasing solutions at Black Hat USA 2025 and commentary on the transformation of penetration testing through AI.
Microsoft unveiled Project Ire, an autonomous AI agent capable of reverse engineering software to detect malware.
Attackers are increasingly using vishing (voice phishing) to compromise corporate accounts, as demonstrated in the Cisco breach.
HTTP request smuggling remains a relevant attack vector, with recent educational content highlighting its exploitation potential.
The distinction between misconfigurations and vulnerabilities in SaaS environments is being emphasised, as confusion between the two can result in overlooked security risks.
Security operations centers (SOCs) continue to struggle with alert fatigue, with industry discussion focused on strategies to reduce false positives and improve incident detection.
The rapid proliferation of AI-assisted development tools is raising concerns about software supply chain security and the challenge of securing code produced by non-traditional developers.

Regulatory or Policy Developments Affecting the Security Industry

Microsoft announced an increase in the prize pool for its Zero Day Quest hacking contest to $5 million, incentivizing research into high-impact vulnerabilities, particularly in cloud and AI security.

Cybersecurity Brief – 2025-07-22

Tue, 22 Jul 2025 00:00:00 +0000

Major Incidents or Breaches

Dell confirmed that the “World Leaks” extortion group breached one of its product demonstration/test lab platforms. The group is attempting to extort Dell for ransom.
Dior has begun notifying U.S. customers of a May cybersecurity incident that compromised their personal information.
Cierant Corporation and law firm Zumpano Patricios disclosed separate data breaches, each affecting over 200,000 individuals.
The Alcohol & Drug Testing Service (TADTS) reported a ransomware attack in July 2024 that exposed personal information of 750,000 people.
Over 1,000 CrushFTP servers are currently exposed online and vulnerable to hijack attacks exploiting a critical security bug that provides admin access via HTTPS.
Louis Vuitton suffered a cyberattack, as reported in recent threat intelligence bulletins.
Ring users reported a surge in unauthorized device logins on May 28. Ring (Amazon) attributed the incident to a backend update bug and denied an external breach.

Newly Discovered Vulnerabilities

Microsoft released emergency patches for two actively exploited SharePoint zero-days, CVE-2025-53770 (“ToolShell”) and CVE-2025-53771. These vulnerabilities have been used in ongoing attacks against US government agencies and other organizations.
A zero-day vulnerability in CrushFTP is being exploited to gain administrative privileges on exposed servers. Over 1,000 instances remain vulnerable.
ExpressVPN fixed a flaw in its Windows client that caused Remote Desktop Protocol (RDP) traffic to bypass the VPN tunnel, exposing users’ real IP addresses during remote sessions.
Wireshark 4.4.8 was released, addressing nine bugs.
WinRAR 7.10 does not propagate all Mark-of-the-Web (MOTW) data when extracting files, potentially impacting security controls.

Notable Threat Actor Activity

APT41, a China-linked cyber espionage group, launched a targeted campaign against government IT services in Africa, using hardcoded internal server names and advanced techniques to evade detection.
Iranian APT MuddyWater deployed new variants of the DCHSpy Android spyware, masquerading as VPN apps to target dissidents and Android users, particularly since the escalation of conflict with Israel.
The Russian cybercrime group NoName057(16) has been disrupted by Europol, with seven arrest warrants issued. The group is known for recruiting followers to conduct DDoS attacks on perceived adversaries.
A surveillance firm was found bypassing SS7 protections to obtain user location data from wireless carriers.

Trends, Tools, or Tactics of Interest

Attackers continue to gain access in well-secured environments by leveraging weak system configurations, outdated encryption, and trusted but unprotected tools, rather than relying solely on novel exploits.
Research is emerging on malicious implants targeting AI components and applications, indicating a new vector for stealthy attacks against AI-powered systems.
The propagation of Mark-of-the-Web (MOTW) data by WinRAR has changed, which may impact the effectiveness of MOTW-based security mechanisms.
Zero Trust security, now seen as a foundational requirement, is increasingly incorporating AI to enhance detection and response capabilities.

Regulatory or Policy Developments Affecting the Security Industry

Intel announced the end of the Clear Linux OS project, archiving its GitHub repositories and ceasing further development.
Veeam warned that recent changes to Recovery Orchestrator’s multi-factor authentication (MFA) rollout are preventing users from logging into the Web UI.

Cybersecurity Brief – 2025-07-21

Mon, 21 Jul 2025 00:00:00 +0000

Major Incidents or Breaches

Over 75 company servers have been breached via active, large-scale exploitation of a critical Microsoft SharePoint zero-day vulnerability (CVE-2025-53770, CVSS 9.8). At least 85 organisations are confirmed affected, with exploitation ongoing since at least July 18th.
Over 3,500 websites have been compromised to host stealth JavaScript-based cryptocurrency miners using advanced obfuscation and WebSocket communication to evade detection.
Five npm packages were injected with malware following a phishing campaign that resulted in the theft of maintainer tokens, constituting a significant software supply chain attack.

Newly Discovered Vulnerabilities

Microsoft SharePoint is affected by two zero-day remote code execution vulnerabilities (CVE-2025-53770 and CVE-2025-53771), both actively exploited in the wild. Emergency patches have been released for some flaws, but at least one remains unpatched. Microsoft recommends applying mitigations and commencing threat hunting.
CrushFTP has a critical vulnerability (CVE-2025-54309, CVSS 9.0) under active exploitation, allowing attackers to gain administrative access on unpatched servers.
Hewlett-Packard Enterprise (HPE) Aruba Instant On Access Points contain hardcoded credentials, enabling attackers to bypass authentication and access the web interface. Security updates have been released to address the issue.

Notable Threat Actor Activity

The PoisonSeed threat group is bypassing FIDO key protections by exploiting QR code phishing and abusing cross-device sign-in features to deceive users into approving malicious authentication requests.
EncryptHub (aka LARVA-208/Water Gamayun) is targeting Web3 developers with phishing campaigns using fake AI platforms to distribute the Fickle Stealer information-stealing malware.

Trends, Tools, or Tactics of Interest

Attackers are reviving browser-based cryptojacking, compromising thousands of sites with stealthy JavaScript miners that leverage WebSockets for covert communication.
A new toolkit, CredMaster, facilitates anonymous password spraying attacks by routing traffic through AWS proxies with rotating IPs to evade detection and throttling.
Supply chain attacks on open-source repositories continue, with phishing campaigns targeting package maintainers to steal credentials and inject malicious code.

Regulatory or Policy Developments Affecting the Security Industry

Microsoft has issued emergency security guidance and patches for SharePoint zero-days, urging organisations to apply mitigations and conduct compromise assessments due to ongoing exploitation.