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Security InformationThis page is dedicated to security, it includes local security information, as well as a number of syndicated security feeds, alerts, tools and news from major security portals. This page aims to provide a single security information access point, helping you stay current with recent security threats. You can check the SG Security FAQ and visit the SG Security forum with any questions you might have. SG Security ScanThe SG Security Scan is a great tool that tests a number of ports on your computer for the most common vulnerabilities.SG Security ScannerVulterable PortsCommonly Open PortsSG Ports - comprehensive database of known TCP/UDP ports
SG Security ArticlesGeneral Security GuideHow To Crack WEP and WPA Wireless NetworksHow to Secure your Wireless NetworkHow to Stop Denial of Service (DoS) AttacksIRDP Security Vulnerability in Windows 9xWhich VPN Protocol to use?Why encrypt your online traffic with VPN ?Latest Security Advisories (US-CERT)CISA Adds Two Known Exploited Vulnerabilities to Catalog (2026.02.25) CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. CISA and Partners Release Guidance for Ongoing Global Exploitation of Cisco SD-WAN Systems (2026.02.25) The purpose of this Alert is to provide resources for organizations with Cisco Software-Defined Wide-Area Networking (SD-WAN) systems, including Federal Civilian Executive Branch (FCEB) agencies, to address ongoing exploitation of multiple vulnerabilities. Notably, the Cybersecurity and Infrastructure Security Agency (CISA) has added CVE-2026-20127 and CVE-2022-20775 to its Known Exploited Vulnerabilities (KEV) Catalog on Feb. 25, 2026. As a result of the malicious cyber activity and vulnerabilities involving Cisco SD-WAN systems, CISA has outlined requirements for FCEB agencies in Emergency Directive (ED) 26-03 to inventory Cisco SD-WAN systems, update them, and assess compromise. CISA and partners have observed malicious cyber actors targeting and compromising Cisco SD-WAN systems of organizations, globally. These actors have been observed exploiting a previously undisclosed authentication bypass vulnerability, CVE-2026-20127, for initial access before escalating privileges using CVE-2022-20775 and establishing long-term persistence in Cisco SD-WAN systems. CISA, National Security Agency (NSA), and international partners Australian Signals Directorates Australian Cyber Security Centre (ASDs ACSC), Canadian Centre for Cyber Security (Cyber Centre), New Zealand National Cyber Security Centre (NCSC-NZ), and United Kingdom National Cyber Security Centre (NCSC-UK), hereafter the authoring organizations, strongly urge network defenders to immediately 1) inventory all in-scope Cisco SD-WAN systems, 2) collect artifacts, including virtual snapshots and logs off of SD-WAN systems to support threat hunt activities, 3) fully patch Cisco SD-WAN systems with available updates, 4) hunt for evidence of compromise, and 5) concurrently review Ciscos latest security advisories, Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability and Cisco Catalyst SD-WAN Vulnerabilities, and implement Ciscos SD-WAN Hardening Guidance.1 To address malicious activity involving vulnerable Cisco SD-WAN systems, CISA issued Emergency Directive 26-03: Mitigate Vulnerabilities in Cisco SD-WAN Systems, which outlines requirements for FCEB agencies to inventory Cisco SD-WAN systems, update them, and assess compromise. Further, CISA released Supplemental Direction ED 26-03: Hunt and Hardening Guidance for Cisco SD-WAN Systems to provide prescriptive actions for FCEB agencies. Ciscos Catalyst SD-WAN Hardening Guide recommends that network defenders address:
CISA and the authoring organizations are providing the following resources:
AcknowledgementsNSA, ASDs ACSC, Cyber Centre, NCSC-NZ, and NCSC-UK contributed to this alert. DisclaimerThe information in this report is being provided as is for informational purposes only. CISA does not endorse any commercial entity, product, company, or service, including any entities, products, or services linked within this document. Any reference to specific commercial entities, products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply endorsement, recommendation, or favoring by CISA. Notes1 Cisco Security, Cisco Catalyst SD-WAN Hardening Guide, last modified February 9, 2026, https://sec.cloudapps.cisco.com/security/center/resources/Cisco-Catalyst-SD-WAN-HardeningGuide CISA Adds One Known Exploited Vulnerability to Catalog (2026.02.24) CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. CISA Adds Two Known Exploited Vulnerabilities to Catalog (2026.02.20) CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. CISA Adds Two Known Exploited Vulnerabilities to Catalog (2026.02.18) CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. CISA Adds Four Known Exploited Vulnerabilities to Catalog (2026.02.17) CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. CISA Adds One Known Exploited Vulnerability to Catalog (2026.02.13) CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria. CISA Adds Four Known Exploited Vulnerabilities to Catalog (2026.02.12) CISA has added four new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.
These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
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