Using CHIRP to Detect Post-Compromise Threat Activity in On-Premises Environments

CISA Hunt and Incident Response Program CHIRP is a new forensics collection tool that CISA developed to help network defenders find indicators of compromise IOCs associated with the SolarWinds and Active Directory/M365 Compromise. CHIRP is freely available on the CISA GitHub repository. Similar t...

NSA Releases Guidance on Zero Trust Security Model

The National Security Agency NSA has released Cybersecurity Information Sheet: Embracing a Zero Trust Security Model, which provides information about, and recommendations for, implementing Zero Trust within networks. The Zero Trust security model is a coordinated system management strategy that...

Compromise of U.S. Water Treatment Facility

In response to recent events where unidentified cyber actors obtained unauthorized access to the supervisory control and data acquisition SCADA system at a U.S. drinking water treatment facility, CISA, the Federal Bureau of Investigation, the Environmental Protection Agency, and the Multi-State...

Adobe Releases Security Updates

Adobe has released security updates to address vulnerabilities in multiple Adobe products. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following Adobe Security Bulletins and apply the necessa...

Cisco Releases Security Updates

Cisco has released security updates to address vulnerabilities in Cisco products. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following Cisco Advisories and apply the necessary updates. For...

Apple Releases Security Updates

Apple has released security updates to address vulnerabilities in macOS Big Sur 11.0.1, macOS Catalina 10.15.7, and macOS Mojave 10.14.6. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Apple...

CERT/CC and CISA Report Multiple Vulnerabilities in Dnsmasq

CISA and the CERT Coordination Center CERT/CC are aware of multiple vulnerabilities affecting Dnsmasq version 2.82 and prior. Dnsmasq is a widely-used, open-source software that provides Domain Name Service forwarding and caching and is common in Internet-of-Things IoT and other embedded devices....

Oracle Releases January 2021 Security Bulletin

Oracle has released its Critical Patch Update for January 2021 to address 329 vulnerabilities across multiple products. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Oracle January 2021...

NSA Cybersecurity Directorate Releases 2020 Year in Review

The National Security Agency NSA Cybersecurity Directorate has released its 2020 Year in Review, outlining key milestones and mission outcomes achieved during NSA Cybersecurity’s first full year of existence. Highlights include NSA Cybersecurity’s contributions to the 2020 elections, Operation Wa...

Malicious Activity Targeting COVID-19 Research, Vaccine Development

In response to malicious activity targeting COVID-19 research and vaccine development in the United States, United Kingdom UK, and Canada, the Cybersecurity and Infrastructure Security Agency CISA, UK’s National Cyber Security Centre NCSC, Canada’s Communications Security Establishment CSE, and t...

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address vulnerabilities in multiple products. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. The Cybersecurity and Infrastructure Security Agency CISA encourages users and administrators to review the...

Hurricane-Related Scams

June 1 marks the official start of the 2020 Atlantic hurricane season. The Cybersecurity and Infrastructure Security Agency CISA warns users to remain on alert for malicious cyber activity targeting potential disaster victims and charitable donors following a hurricane. Fraudulent emails—often...

U.S. Cyber Command Shares Seven New Malware Samples

U.S. Cyber Command has released seven malware samples to the malware aggregation tool and repository, VirusTotal. The Cybersecurity and Infrastructure Security Agency CISA encourages users and administrators to review U.S. Cyber Command’s VirusTotal page to view the samples. CISA also recommends...

VMware Releases Security Updates

VMware has released security updates to address vulnerabilities in Cloud Foundation and Harbor Container Registry for Pivotal Cloud Foundry. An attacker could exploit some of these vulnerabilities to take control of an affected system. The Cybersecurity and Infrastructure Security Agency CISA...

Supermicro Releases Security Updates

Supermicro has released security updates to address vulnerabilities affecting the Baseboard Management Controller BMC component of Supermicro X9, X10, and X11 platforms. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. The Cybersecurity and...

FBI Releases Article on Protected Voices Campaign

The Federal Bureau of Investigation FBI has released an article on the Protected Voices initiative designed to mitigate the risk of cyber influence operations targeting U.S. elections. As part of the initiative, FBI offices are coordinating with political campaigns at the local, state, and federa...

MS-ISAC Releases Security Primer on TrickBot Malware

The Multi-State Information Sharing and Analysis Center MS-ISAC has released a security primer on TrickBot malware. TrickBot is a modular banking Trojan that targets users’ financial information and acts as a dropper for other malware. An attacker can leverage TrickBot’s modules to steal banking...

Bluetooth Vulnerability

NCCIC is aware of a vulnerability affecting Bluetooth firmware and operating system software drivers. A remote attacker could exploit this vulnerability to obtain sensitive information. NCCIC encourages users and administrators to review Vulnerability Note VU 304725 for more information and refer...

VMware Releases Security Updates

VMware has released security updates to address a vulnerability in vRealize Automation. An attacker could exploit this vulnerability to take control of an affected system. NCCIC encourages users and administrators to review the VMware Security Advisory VMSA-2018-0009 and apply the necessary...

Apple Releases Multiple Security Updates

Apple has released security updates to address vulnerabilities in multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected system. NCCIC/US-CERT encourages users and administrators to review Apple security pages for the following products and apply...

Potential Hurricane Harvey Phishing Scams

US-CERT warns users to remain vigilant for malicious cyber activity seeking to capitalize on interest in Hurricane Harvey. Users are advised to exercise caution in handling any email with subject line, attachments, or hyperlinks related to Hurricane Harvey, even if it appears to originate from a...

Joomla! Releases Security Update for CMS

Joomla! has released version 3.6.5 of its Content Management System CMS software to address multiple vulnerabilities. Exploitation of one of these vulnerabilities may allow a remote attacker to take control of an affected website. US-CERT encourages users and administrators to review the Joomla!...

Drupal Releases Security Updates

Drupal has released updates to address multiple vulnerabilities. Exploitation of some of these vulnerabilities may allow a remote attacker to take control of an affected website. Available updates include: Drupal core 6.38 for 6.x users Drupal core 7.43 for 7.x users Drupal core 8.0.4 for 8.0.x...

FTC Announces Enhancements to IdentityTheft.gov

The Federal Trade Commission FTC has upgraded its IdentityTheft.gov site to provide improved help to victims of identity theft. Enhancements include more personalized response plans for consumers, automatic generation of documents to aid in recovery, and better integration of the site with the...

Securing Home and Small Business Routers

Home and Small Business routers have become the ideal target for attackers seeking to gain control over a user's gateway to the Internet. Router misconfigurations e.g., default credentials, interfaces open to the Internet or the lack of security precautions e.g., absence of updates may make users...

US Tax Season Phishing Scams and Malware Campaigns

In the past, US-CERT has received reports of an increased number of phishing scams and malware campaigns that seek to take advantage of the United States tax season. The Internal Revenue Service has issued an advisory on its website warning consumers about potential scams. Tax season phishing...

Google Releases Google Chrome 29.0.1547.57

Google has released Google Chrome 29.0.1547.57 for Windows, Mac, Linux, and Chrome Frame to address multiple vulnerabilities. These vulnerabilities could allow a remote attacker to cause a denial of service condition, conduct a directory traversal attack, or obtain sensitive information. US-CERT...

Scams Exploiting Boston Marathon Explosion

Malicious actors are exploiting the April 15 explosions at the Boston Marathon in attempts to collect money intended for charities and to spread malicious code. Fake websites and social networking accounts have been set up to take advantage of those interested in learning more details about the...

Google Releases Chrome 16.0.912.75

Google has released Chrome 16.0.912.75 for Linux, Mac, Windows, and Chrome Frame to address multiple vulnerabilities. These vulnerabilities may allow an attacker to execute arbitrary code. US-CERT encourages users and administrators to review the Google Chrome Releases blog entry and update to...

Multiple Programming Language Implementations Vulnerable to Hash Table Collision Attacks

US-CERT is aware of reports stating that multiple programming language implementations, including web platforms, are vulnerable to hash table collision attacks. This vulnerability could be used by an attacker to launch a denial-of-service attack against websites using affected products. The Ruby...

Cisco Releases Two Security Advisories

Cisco has released two security advisories to address vulnerabilities affecting CiscoWorks Common Services and Cisco Show and Share. These vulnerabilities may allow an attacker to execute arbitrary code or bypass security restrictions. US-CERT encourages users and administrators to review Cisco...

Adobe Releases Security Bulletin for Critical Vulnerability in Flash Player

Adobe has released security bulletin APSB11-18 to alert users of a critical vulnerability in Adobe Flash Player. The following versions are affected: 10.3.181.23 and earlier for Windows, Macintosh, Linux, and Solaris 10.3.185.23 and earlier for Android Adobe indicates that it has received reports...

Internet System Consortium Releases BIND Advisory

The Internet System Consortium has released an advisory to address a vulnerability affecting BIND versions 9.7.1 through 9.7.2-P3. This vulnerability may allow an attacker to cause a denial-of-service condition. US-CERT encourages users and administrators using the affected versions of BIND to...

Microsoft Windows .LNK Vulnerability

US-CERT is aware of a vulnerability affecting Microsoft Windows. This vulnerability is due to the failure of Microsoft Windows to properly obtain icons for .LNK files. Microsoft uses .LNK files, commonly referred to as "shortcuts," as references to files or applications. By convincing a user to...

Cisco Releases Advisory for IronPort Encryption Appliance

Cisco has released an advisory to address multiple vulnerabilities in IronPort Encryption Appliance. Exploitation of these vulnerabilities may allow a remote, unauthenticated attacker to execute arbitrary code or obtain sensitive information. US-CERT encourages users and administrators to review...

RealNetworks, Inc. Releases Updates to Address Vulnerabilities

RealNetworks, Inc. has released updates to address multiple vulnerabilities in several versions of RealPlayer for Windows, Mac, and Linux and several versions of the Helix Player for Linux. These vulnerabilities may allow an attacker to execute arbitrary code. US-CERT encourages users and...

​​Supply Chain Compromise Impacts Axios Node Package Manager​

The Cybersecurity and Infrastructure Security Agency CISA is releasing this alert to provide guidance in response to the software supply chain compromise of the Axios node package manager npm.1 Axios is an HTTP client for JavaScript that developers commonly use in Node.js and browser environments...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities KEV Catalog, based on evidence of active exploitation. CVE-2025-68613link is external n8n Improper Control of Dynamically-Managed Code Resources Vulnerability This type of vulnerability is a frequent attack vector for...

CISA Releases Eight Industrial Control Systems Advisories

CISA released eight Industrial Control Systems ICS advisories on June 24, 2025. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-25-175-01 Kaleris Navis N4 Terminal Operating System ICSA-25-175-02 Delta Electronics...

CISA Releases Ten Industrial Control Systems Advisories

CISA released ten Industrial Control Systems ICS advisories on April 10, 2025. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-25-100-01 Siemens License Server ICSA-25-100-02 Siemens SIDIS Prime ICSA-25-100-03 Siemens...

CISA Adds Two Known Exploited Vulnerabilities to Catalog

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2025-30406link is external Gladinet CentreStack Use of Hard-coded Cryptographic Key Vulnerability CVE-2025-29824link is external Microsoft Windows Common Log File...

CISA Releases Two Industrial Control Systems Advisories

CISA released two Industrial Control Systems ICS advisories on February 27, 2025. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-25-058-01 Schneider Electric Communication Modules for Modicon M580 and Quantum...

CISA Adds Three Known Exploited Vulnerabilities to Catalog

CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-1212link is external Progress Kemp LoadMaster OS Command Injection Vulnerability CVE-2024-0012link is external Palo Alto Networks PAN-OS Management Interface...

Foreign Threat Actor Conducting Large-Scale Spearphishing Campaign with RDP Attachments

CISA has received multiple reports of a large-scale spearphishing campaign targeting organizations in several sectors, including government and information technology IT. The foreign threat actor, often posing as a trusted entity, is sending spearphishing emails containing malicious remote deskto...

CISA Adds Three Known Exploited Vulnerabilities to Catalog

CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-43047link is external Qualcomm Multiple Chipsets Use-After-Free Vulnerability CVE-2024-43572link is external Microsoft Windows Management Console Remote Code...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-37085 VMware ESXi Authentication Bypass Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-4671 Google Chromium in Visuals Use-After-Free Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose...

Updated: New Software Updates and Mitigations to Defend Against Exploitation of Ivanti Connect Secure and Policy Secure Gateways

Note: CISA will update this Alert with more information as it becomes available. Updated Feb. 15, 2024: On Feb. 14, 2024, Ivanti released new software updates for Ivanti Connect Secure and Ivanti Policy Secure. Review Ivanti's updated KB articlelink is external for more information. End of Feb. 1...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-21893 Ivanti Connect Secure, Policy Secure, and Neurons Server-Side Request Forgery SSRF Vulnerability These types of vulnerabilities are frequent attack vectors...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-23222 Apple Multiple Products Type Confusion Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose...