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Unknown threat actors have been observed exploiting a newly patched security flaw in Citrix NetScaler ADC and NetScaler Gateway appliances to target organizations in North America and Europe.
The activity, observed by Mandiant Consulting and Google Threat Intelligence Group (GTIG) in September 2026, has targeted government, financial services, technology, education, and legal and professional
U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Apple Multiple Products flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added an Apple Multiple Products flaw, tracked as CVE-2026-86950 (CVSS score of 8.8), to its Known Exploited Vulnerabilities (KEV) catalog. This week, Apple has released security updates for iOS, iPadOS […]
Mandiant and GTIG detail active exploitation of a Citrix NetScaler zero-day, deploying custom web shells WHIPSHOT and SLAPSHOT for root access. Mandiant and Google Threat Intelligence Group caught active exploitation of a zero-day in Citrix NetScaler ADC and Gateway appliances in late September 2026. The bug, tracked as CVE-2026-88772 (CVSS score of 9.5), has been […]
Roughly a dozen vulnerabilities have been patched in each of the open source cryptographic libraries.
The post High-Severity Vulnerabilities Patched in OpenSSL, WolfSSL appeared first on SecurityWeek.
Cybersecurity researchers have disclosed technical details of a recently patched critical security flaw in Citrix NetScaler ADC and Gateway that has come under active exploitation in the wild.
The vulnerability, tracked as CVE-2026-88772 (CVSS score: 9.5), has been described as a memory overflow bug in the Datagram Transport Layer Security (DTLS) protocol handling that's rooted in the NetScaler
A patched Unsloth Studio vulnerability allows malicious AI models to execute arbitrary Python code during inspection, via the trust_remote_code setting.
Cybersecurity firms say attackers exploited the Citrix NetScaler CVE-2026-88772 zero-day to deploy custom web shells and tunneling malware, gain root access, steal credentials, and spread into internal networks. [...]
Since January 2026, Microsoft has observed Russian state threat actor Star Blizzard evolve their detection evasion capabilities through large-scale phishing campaigns, the use of accounts on compromised websites, and a novel malware delivery technique, tracked by Microsoft as “RedFlick”.
The post Star Blizzard refines phishing and malware delivery with the RedFlick technique appeared first on Microsoft Security Blog.
The hacking of internet-exposed, vulnerable Citrix NetScaler ADC and Gateway deployments has escalated. What started as stealthy targeting via zero-day exploits has now become widespread “spray and pray” exploitation, fueled by the publication of a root-cause analysis and a proof-of-concept exploit for CVE-2026-88771, which is remotely exploitable on unpatched devices with the default configuration. From rumor to confirmed zero-day Rumors about a NetScaler zero-day being exploited in the wild started late last week, and were … More →
The post NetScaler zero-day exploitation escalates into mass attacks (CVE-2026-88771) appeared first on Help Net Security.
The company said it found and patched a previously unknown critical vulnerability in one product during the weekend shutdown, and has no indication it was exploited.
The post Kiteworks lifts shutdown advisory after ‘credible threat intelligence’ from federal authorities appeared first on CyberScoop.
Apple patched zero-day CVE-2026-86950 in CoreGraphics, exploited in sophisticated targeted attacks against specific iOS users. Apple has released security updates for iOS, iPadOS and macOS to fix a zero-day vulnerability, tracked as CVE-2026-86950, in CoreGraphics that may have been exploited in attacks against specific individuals. The flaw is an out-of-bounds write that can lead to […]
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 actors and poses significant risks to the federal enterprise.
Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies. BOD 26-04 reinforces the importance of the KEV Catalog and requires federal agencies to prioritize rapid remediation of high-risk vulnerabilities, specifically those identified by Common Vulnerabilities and Exposures (CVEs) listed in CISA’s KEV Catalog on publicly exposed assets that grant total control of the asset post-exploitation, while deferring action for lower-risk vulnerabilities. BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied.
While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
Aware of an exploited vulnerability not currently listed in the KEV Catalog? Submit it for potential addition through CISA’s KEV Nomination Form. Potential KEV additions must have a CVE ID, evidence of exploitation, and clear mitigati
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an attacker to replace software and execute arbitrary code with root privileges.
The following versions of Lantronix G520 Series Cellular Gateway are affected:
G520 Series 2.6.0.4R6_stable (CVE-2026-84409, CVE-2026-91191)
CVSS
Vendor
Equipment
Vulnerabilities
v3 7.5
Lantronix
Lantronix G520 Series Cellular Gateway
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Improper Verification of Cryptographic Signature
Background
Critical Infrastructure Sectors: Transportation Systems, Energy, Water and Wastewater Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States
Vulnerabilities
Expand All +
CVE-2026-84409
The device's update mechanism retrieves metadata for software updates over an unencrypted HTTP connection and stores portions of that metadata for later use. A management interface subsequently returns this stored value in a JSON response, and the web interface responsible for displaying update information inserts that value directly into the page as HTML. This behavior allows attacker‑controlled metadata to be interpreted as script content. In addition, the same authenticated origin provides an interface capable of executing system‑level commands with root privileges. An attacker able to influence update metadata could exploit these conditions to execute arbitrary code within the administrative context of the device.
View CVE Details
Affected Products
Lantronix G520 Series Cellular Gateway
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an attacker to access critical data or execute arbitrary code.
The following versions of Toptech TMS7 and TopHAT are affected:
TMS7 7.6.3 (CVE-2026-71379, CVE-2026-70356, CVE-2026-72510, CVE-2026-63713, CVE-2026-68954, CVE-2026-68068, CVE-2026-72507, CVE-2026-71302, CVE-2026-69662, CVE-2026-71189)
TopHAT 7.6.3 (CVE-2026-71379, CVE-2026-70356, CVE-2026-72510, CVE-2026-63713, CVE-2026-68954, CVE-2026-68068, CVE-2026-72507, CVE-2026-71302, CVE-2026-69662, CVE-2026-71189)
CVSS
Vendor
Equipment
Vulnerabilities
v3 10
Toptech Systems
Toptech TMS7 and TopHAT
Files or Directories Accessible to External Parties, Unrestricted Upload of File with Dangerous Type, Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection'), Session Fixation, Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection'), Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Background
Critical Infrastructure Sectors: Energy, Chemical, Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States
Vulnerabilities
Expand All +
CVE-2026-71379
The file export endpoint allows any unauthenticated attacker to export arbitrary database tables by sending a crafted POST request.
View CVE Details
Affected Products
Toptech TMS7 and TopHAT
Vendor:
Toptech Systems
Product Version:
Toptech Systems TMS7: 7.6.3, Toptech Systems TopHAT: 7.6.3
Product Status:
known_affected
Remedia
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow attackers to access, modify, or delete sensitive user data and critical system files, potentially compromising the operation of the entire platform.
The following versions of Viidure Dashcam Android Application are affected:
Dashcam Android Application <=3.3.1.260403 (CVE-2026-94204, CVE-2026-96587)
CVSS
Vendor
Equipment
Vulnerabilities
v3 10
Viidure
Viidure Dashcam Android Application
Incorrect Permission Assignment for Critical Resource, Use of Hard-coded Credentials
Background
Critical Infrastructure Sectors: Transportation Systems
Countries/Areas Deployed: Worldwide
Company Headquarters Location: China
Vulnerabilities
Expand All +
CVE-2026-94204
The central cloud storage backend for the entire dashcam platform is misconfigured with public‑read permissions, allowing unrestricted access to all stored objects. Because this bucket serves as shared storage for the platform, sensitive user records, live dashcam footage, application packages, and firmware files are exposed to anyone on the internet.
View CVE Details
Affected Products
Viidure Dashcam Android Application
Vendor:
Viidure
Product Version:
Viidure Dashcam Android Application: <=3.3.1.260403
Product Status:
known_affected
Remediations
No fix planned
Viidure did not respond to CISA's coordination attempts. Users of affected versions of the Viidure Dashcam Android Application are advised to contact Viidure customer support for additional information https://viidure.app/.
Relevant CWE: CWE-732
View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an attacker to access sensitive information, access user accounts, execute OS-level commands, or take full control over the device.
The following versions of Anjvision YSSD-RTMP-H5 are affected:
YSSD-RTMP-H5 firmware 3.3.2.4_build_2024-12-26 (CVE-2026-100291, CVE-2026-100292, CVE-2026-100293, CVE-2026-100294, CVE-2026-100295, CVE-2026-100296, CVE-2026-100297, CVE-2026-100298, CVE-2026-100299)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.8
Anjvision
Anjvision YSSD-RTMP-H5
Initialization of a Resource with an Insecure Default, Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Improper Verification of Cryptographic Signature, Use of Hard-coded Credentials, Active Debug Code, Improper Check for Unusual or Exceptional Conditions, Server-Side Request Forgery (SSRF), Insufficiently Protected Credentials, Use of Weak Credentials
Background
Critical Infrastructure Sectors: Commercial Facilities
Countries/Areas Deployed: Worldwide
Company Headquarters Location: China
Vulnerabilities
Expand All +
CVE-2026-100291
In Anjvision YSSD‑RTMP‑H5 firmware version 3.3.2.4, several ONVIF service endpoints process management requests without enforcing required authentication. This could allow an unauthorized attacker to access sensitive device operations.
View CVE Details
Affected Products
Anjvision YSSD-RTMP-H5
Vendor:
Anjvision
Product Version:
Anjvision YSSD-RTMP-H5 firmware: 3.3.2.4_build_2024-12-26
Product Status:
known_affected
R
View CSAF
Summary
Successful exploitation of this vulnerability may allow attackers to achieve remote command execution on affected devices, potentially with root privileges, leading to full compromise of the camera system.
The following versions of VIVOTEK Camera Firmware are affected:
V Series model_FD9187 (CVE-2026-22755)
V Series model_FD9189 (CVE-2026-22755)
V Series model_FD9365 (CVE-2026-22755)
V Series model_FD9387 (CVE-2026-22755)
V Series model_FD9389 (CVE-2026-22755)
V Series model_FD9391 (CVE-2026-22755)
C Series model_FE9180 (CVE-2026-22755)
V Series model_FE9191 (CVE-2026-22755)
V Series model_FE9382 (CVE-2026-22755)
V Series model_FE9391 (CVE-2026-22755)
V Series model_IB9365 (CVE-2026-22755)
V Series model_IB9387 (CVE-2026-22755)
V Series model_IB9389 (CVE-2026-22755)
V Series model_IB939 (CVE-2026-22755)
V Series model_IP9165 (CVE-2026-22755)
V Series model_IP9171 (CVE-2026-22755)
S Series model_IP9172 (CVE-2026-22755)
V Series model_IP9181 (CVE-2026-22755)
V Series model_IP9191 (CVE-2026-22755)
V Series model_IT9389 (CVE-2026-22755)
V Series model_MA9321 (CVE-2026-22755)
V Series model_MA9322 (CVE-2026-22755)
S Series model_MS9321 (CVE-2026-22755)
V Series model_MS9390 (CVE-2026-22755)
S Series model_TB9330 (CVE-2026-22755)
Dome model_FD8365 (CVE-2026-22755)
Dome model_FD8365v2 (CVE-2026-22755)
Dome model_FD9165 (CVE-2026-22755)
Dome model_FD9171 (CVE-2026-22755)
Dome model_FD9371 (CVE-2026-22755)
Dome model_FD9381 (CVE-2026-22755)
Panoramic model_FE9181 (CVE-2026-22755)
Panoramic model_FE9381 (CVE-2026-22755)
VIVOTEK
View CSAF
Summary
Successful exploitation of this vulnerability could allow an attacker to achieve remote code execution or cause a denial of service.
The following versions of MikroTik RouterOS are affected:
RouterOS <7.24 (CVE-2026-84411)
CVSS
Vendor
Equipment
Vulnerabilities
v3 9.8
MikroTik
MikroTik RouterOS
Integer Underflow (Wrap or Wraparound)
Background
Critical Infrastructure Sectors: Communications, Information Technology
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Latvia
Vulnerabilities
Expand All +
CVE-2026-84411
The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication. This can be leveraged by an unauthenticated network attacker to achieve arbitrary code execution as root, or to cause a denial of service, using a single crafted request.
View CVE Details
Affected Products
MikroTik RouterOS
Vendor:
MikroTik
Product Version:
MikroTik RouterOS: <7.24
Product Status:
known_affected
Remediations
Vendor fix
MikroTik recommends users update RouterOS to version 7.23 or later. The upgrade can be downloaded from the MikroTik website.
https://mikrotik.com/download
Relevant CWE: CWE-191 Integer Underflow (Wrap or Wraparound)
Metrics
CVSS Version
Base Score
Base Severity
Vector String
3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0
9.3
CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Acknowledgments
An anonymous researcher reported thi