Stolen credentials can enable account takeover and lateral movement; phishing-resistant MFA, password managers, and rapid revocation reduce the risk.
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Background for this topic.
Credentials are the data used to verify a user's identity to a system, commonly including usernames, passwords, security tokens, or biometric identifiers. They serve as gatekeepers for access to accounts, applications, and sensitive information. Attackers target credentials to impersonate users, escalate privileges, or gain unauthorized system access.
Compromise of credentials can occur through phishing, credential stuffing, or theft from insecure storage. Effective defenses include enforcing strong, unique passwords, implementing multi-factor authentication (MFA), and securely storing credentials using hashing or encryption. Monitoring for unusual login patterns and promptly revoking compromised credentials are also critical to limit attacker impact.
Weekly headline count for the current query.
Threat actors associated with the Anubis ransomware operation have been observed exploiting the Citrix Bleed 2 (CVE-2025-5777) vulnerability to obtain initial access
The infostealer was delivered via CVE-2026-48558, a critical authentication bypass vulnerability in SimpleHelp, targeting credentials linking development and admin environments to wider enterprise systems.
A public proof-of-concept is now out for CVE-2026-55200, a critical flaw in libssh2 that lets a malicious or compromised SSH server trigger memory corruption on a connecting client, with possible code execution. No credentials, no user interaction. The bug affects every release up to and including 1.11.1 and carries a CVSS 4.0 score of 9.2
Cisco addressed CVE-2026-20181, a critical ISE vulnerability that lets authenticated admins execute commands and gain root access. Cisco addressed a critical command execution vulnerability, tracked as CVE-2026-20181 (CVSS score of 9.1), affecting Identity Services Engine (ISE) and ISE-PIC. The flaw stems from improper validation of user-supplied input, allowing an authenticated attacker with administrative credentials to […]
An unknown threat actor has been observed using a large language model (LLM) agent to conduct post-compromise actions after obtaining initial access following the exploitation of a publicly-accessible Marimo network using a recently disclosed vulnerability
Hackers are exploiting an authentication bypass vulnerability (CVE-2026-35616) in FortiClient Enterprise Management Server (EMS) to deliver an undocumented credential stealer called EKZ. [...]
Hackers are running a large-scale campaign to steal credentials in an automated way after exploiting React2Shell (CVE-2025-55182) in vulnerable Next.js apps. [...]
A large-scale credential harvesting operation has been observed exploiting the React2Shell vulnerability as an initial infection vector to steal database credentials, SSH private keys, Amazon Web Services (AWS) secrets, shell command history, Stripe API keys, and GitHub tokens at scale
Underground Telegram channels shared SmarterMail exploit PoCs and stolen admin credentials within days of disclosure. Flare explains how monitoring these communities reveals rapid weaponization of CVE-2026-24423 and CVE-2026-23760 tied to ransomware activity. [...]
A maximum severity security vulnerability in Dell RecoverPoint for Virtual Machines has been exploited as a zero-day by a suspected China-nexus threat cluster dubbed UNC6201 since mid-2024, according to a new report from Google Mandiant and Google Threat Intelligence Group (GTIG)
Cloud security company Wiz has revealed that it uncovered in-the-wild exploitation of a security flaw in a Linux utility called Pandoc as part of attacks designed to infiltrate Amazon Web Services (AWS) Instance Metadata Service (IMDS)
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added a medium-severity security flaw impacting Microsoft Windows to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation in the wild
In addition to using CVE-2018-0171 and other Cisco bugs to break into telecom networks, the China-sponsored APT is also using using stolen login credentials for initial access.
Cisco has confirmed that a Chinese threat actor known as Salt Typhoon gained access by likely abusing a known security flaw tracked as CVE-2018-0171, and by obtaining legitimate victim login credentials as part of a targeted campaign aimed at major U.S. telecommunications companies
Fortinet publicly disclosed today a critical FortiManager API vulnerability, tracked as CVE-2024-47575, that was exploited in zero-day attacks to steal sensitive files containing configurations, IP addresses, and credentials for managed devices. [...]
Suspected state-sponsored hackers have been exploiting a zero-day vulnerability in Palo Alto Networks firewalls tracked as CVE-2024-3400 since March 26, using the compromised devices to breach internal networks, steal data and credentials. [...]
Hackers are exploiting a critical ownCloud vulnerability tracked as CVE-2023-49103 that exposes admin passwords, mail server credentials, and license keys in containerized deployments. [...]
Hackers are conducting a large-scale campaign to exploit the recent CVE-2023-3519 flaw in Citrix NetScaler Gateways to steal user credentials. [...]
An insider threat or remote attacker with initial access could exploit CVE-2022-31676 to steal sensitive data and scoop up user credentials for follow-on attacks.
The security flaw tracked as CVE-2022-30216 could allow attackers to perform server spoofing or trigger authentication coercion on the victim.