Threat database

In October 2026, Citrix NetScaler ADC appliances running affected 14.1 builds were compromised through a chain of two vulnerabilities: CVE-2026-88771 and CVE-2026-88779. Attackers achieved root code execution by exploiting a pre-authentication log-poisoning/RCE vulnerability and a SAML-parsing crash. The intrusion involved deploying PHP web shells, modifying system shells, creating cron jobs, and establishing boot hooks for persistence. Additional tools included TCP session managers, HTTP tunnels, and reverse agents for command-and-control. Attackers used a Go-based reconnaissance tool to map internal infrastructure and synchronized implants across appliance pairs to maintain persistence. The campaign exfiltrated NetScaler configurations, historical data, and key material, evolving from initial access to a persistent internal reconnaissance platform.

The vulnerability exists within internal components of BeyondTrust’s Remote Support product. The components did not adequately validate the origin of the messages it received. Under the right conditions, this could allow an attacker to perform file operations on the appliance.

CVE-2026-0322 is a high-severity remote code execution vulnerability in the management interface of Palo Alto Networks PAN-OS software. It allows an authenticated attacker with network access to execute arbitrary code with root privileges on affected firewalls. The vulnerability affects PA-Series and VM-Series firewalls and Panorama (virtual and M-Series), but not Cloud NGFW or Prisma Access. Access to the management interface should be restricted to trusted internal IPs to minimize risk. Multiple PAN-OS versions prior to specific fixed releases are affected.

A vulnerability in the Advanced Malware Protection (AMP) feature of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to write arbitrary files on the underlying operating system. This vulnerability is due to improper handling of email attachments when the file reputation service is enabled. An attacker could exploit this vulnerability by sending an email that contains a crafted attachment through an affected device. A successful exploit could allow the attacker to write arbitrary files and execute commands with root privileges on the underlying operating system.

SiteGuard Server Edition for Apache httpd contains an OS command injection vulnerability that allows an attacker with limited privileges to execute arbitrary operating system commands with root or SYSTEM level privileges. This vulnerability is classified as high severity with a CVSS score of 7.8. No specific affected versions or patch information is provided.

Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.

Authentication bypass by spoofing in ICS before version 25.1.3.0 allows a remote unauthenticated attacker to execute arbitrary commands. This does not impact ICS version 22.7R2.14 or prior.

ONLYOFFICE Docs Server has a path traversal vulnerability (CVE-2021-3199) that occurs when JSON Web Tokens (JWT) are used. The flaw involves a /.. sequence in an image upload parameter, which could allow an attacker to execute remote code on the server. This vulnerability has been exploited in the wild. No specific affected versions or patch information is provided.

Apache Struts contains a command injection vulnerability identified as CVE-2016-3081. This flaw allows remote attackers to execute arbitrary code via the method:prefix parameter when Dynamic Method Invocation is enabled. The vulnerability has been exploited in the wild, indicating active use by attackers. No specific affected versions or patch information is provided in the available data.

CVE-2015-5477 is a vulnerability in ISC BIND that causes data processing errors when handling TKEY DNS resource record requests. This flaw can lead to a denial of service by causing the BIND DNS server (named) to exit unexpectedly due to an assertion failure triggered by specially crafted DNS queries. The vulnerability affects multiple Red Hat Enterprise Linux versions, and patches have been released to address the issue. Exploitation in the wild has been observed.

ProFTPD contains an improper access control vulnerability that allows remote attackers to read and write arbitrary files using the site cpfr and site cpto commands. This vulnerability has been exploited in the wild and is considered high severity.

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.

A high-severity vulnerability (CVE-2026-88779) affects Citrix NetScaler ADC and NetScaler Gateway products, including their FIPS variants. Multiple versions prior to 14.1-73.41, 13.1-64.28, and 13.1-37.282 are impacted. The vulnerability is publicly known but no confirmed exploits have been observed in the wild. No patch or remediation information is currently available.

AhsayCBS backup utility versions up to 10.3.4 contain a vulnerability (CVE-2026-105133) that allows unauthenticated remote code execution. Exploitation involves chaining two critical vulnerabilities to bypass authentication and execute code with SYSTEM privileges. Attackers have deployed webshells, cryptocurrency miners disguised as legitimate processes, and persistence mechanisms including fake Windows services and kernel driver exploitation. Managed service providers are primarily targeted.