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Critical Zero-Day Vulnerabilities Exploited in Citrix NetScaler ADC, Gateway

Update October 9, 2026: CISA has updated this Alert to: (1) include CVE-2026-107406; (2) include CVE-2026-88779 following its addition to the KEV Catalog on Oct. 4, 2026; (3) clarify the potential relationship between CVE-2026-88779 and CVE-2026-88771; and (4) emphasize the…

  • 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-2026-86950 Apple Multiple Products Out-of-Bounds Write Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber…

  • Savannah lwIP SMTP client

    View CSAF Summary Successful exploitation of this vulnerability could crash the device being accessed; a buffer overflow condition may allow remote code execution. The following versions of Savannah lwIP SMTP client are affected: lwIP SMTP client 2.2.1 (CVE-2026-15340) CVSS…

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  1. Red Lion Controls N-Tron 700 Series

    View CSAF Summary Successful exploitation of these vulnerabilities could allow a malicious user to access the device and gain administrative access. This access would allow the user to view, edit, and upload configuration files. Further, a malicious user can cause the switch to…

  2. Grid Protection Alliance openPDC and openHistorian

    View CSAF Summary The following versions of Grid Protection Alliance openPDC and openHistorian are affected: openPDC <2.9.477, <2.9.482 (CVE-2026-104629, CVE-2026-100730, CVE-2026-105281, CVE-2026-85479, CVE-2026-101022) openPDC (Docker image) <2.9.477, <2.9.482 (CVE-2026-104629…

  3. Satel Netco Design

    View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary scripts in a user's browser, consume excessive system resources, enumerate files, create or modify files, and potentially execute arbitrary code. The following versions…

  4. Johnson Controls EasyIO FG

    View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain full unauthorized access to the device. The following versions of Johnson Controls EasyIO FG are affected: EasyIO FG firmware <=2.0b52 (CVE-2026-27872, CVE-2026-27873) CVSS Vendor…

  5. Hitachi Energy RTU500

    View CSAF Summary Hitachi Energy is publishing this cybersecurity advisory in response to the security findings reported by Dragos affecting end-of-life RTU500 CMU firmware version 9.x. The reported findings are associated with legacy RTU500 firmware versions that were developed…

  6. Hitachi Energy Asset Suite

    View CSAF Summary Hitachi Energy is aware of unauthenticated servlet access vulnerabilities that affect Asset Suite product versions listed in this document. These vulnerabilities can be exploited to potentially cause confidentiality, integrity and availability impact on the…

  7. Hitachi Energy SOI

    View CSAF Summary Hitachi Energy is aware of RCE (Remote Code Execution) vulnerability in Apache ActiveMQ component of SOI product versions listed in this document. These vulnerabilities can be exploited to carry out various attacks affecting confidentiality, integrity, and…

  8. Hitachi Energy REB500

    View CSAF Summary Hitachi Energy is aware of open-source software vulnerabilities that affect REB500 product versions listed in this document. These vulnerabilities can be exploited to carry out Denial of Service (DoS) attack on the product. Please refer to the Recommended…

  9. 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-2026-88779 Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability This type of vulnerability is…

  10. CISA Adds Two Known Exploited Vulnerabilities to Catalog

    CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-102489 Zammad GmbH Zammad Session Fixation Vulnerability CVE-2026-102490 Zammad GmbH Zammad Improper Privilege Management Vulnerability…

  11. 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-2026-104286 Fortinet FortiMail Path Traversal Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors…

  12. CISA Malcolm

    View CSAF Summary The following versions of CISA Malcolm are affected: Malcolm CVSS Vendor Equipment Vulnerabilities v3 8.8 CISA CISA Malcolm Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Improper Neutralization of Special Elements used in…

  13. Armatura LLC Armatura One

    View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to gain unauthorized access to the database, execute arbitrary code on the host with the highest level of privilege, or gain control of the physical access-control system. The following…

  14. Meari IoT Cloud Platform OpenAPI Service

    View CSAF Summary Successful exploitation of these vulnerabilities could allow attackers to manipulate device configurations, trigger unauthorized behaviors, and access sensitive information such as device credentials, owner details, and network data without proper authorization.…

  15. Johnson Controls EasyIO Neo Series EC and CW Controllers

    View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to gain access to sensitive information that could be used to conduct further attacks against the system. The following versions of Johnson Controls EasyIO Neo Series EC and CW Controllers are…

  16. Monta monta.app

    View CSAF Summary Successful exploitation of these vulnerabilities could enable attackers to gain unauthorized administrative control over vulnerable charging stations or disrupt charging services through denial-of-service attacks. The following versions of Monta monta.app are…

  17. Johnson Controls EasyIO Neo Series EC and CW Controllers

    View CSAF Summary Successful exploitation of this vulnerability could allow an attacker tointercept and read sensitive information, including credentials andsession data. The following versions of Johnson Controls EasyIO Neo Series EC and CW Controllers are affected: EasyIO Neo…

  18. ABB Protection and Control IED Manager PCM600

    View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to escalate privileges or overwrite files. The following versions of ABB Protection and Control IED Manager PCM600 are affected: Protection and Control IED Manager PCM600 <=2.14…