Security Vulnerabilities
Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In versions up to and including 0.9-rc2, the simple protocol server ignores the documented client limit and accepts unlimited connections, allowing for easy local DoS. Although `CLIENTS_MAX` is defined, `server_work()` unconditionally `accept()`s and `client_new()` always appends the new client and increments `n_clients`. There is no check against the limit. When client cannot be accepted as a result of maximal socket number of avahi-daemon, it logs unconditionally error per each connection. Unprivileged local users can exhaust daemon memory and file descriptors, causing a denial of service system-wide for mDNS/DNS-SD. Exhausting local file descriptors causes increased system load caused by logging errors of each of request. Overloading prevents glibc calls using nss-mdns plugins to resolve `*.local.` names and link-local addresses. As of time of publication, no known patched versions are available, but a candidate fix is available in pull request 808, and some workarounds are available. Simple clients are offered for nss-mdns package functionality. It is not possible to disable the unix socket `/run/avahi-daemon/socket`, but resolution requests received via DBus are not affected directly. Tools avahi-resolve, avahi-resolve-address and avahi-resolve-host-name are not affected, they use DBus interface. It is possible to change permissions of unix socket after avahi-daemon is started. But avahi-daemon does not provide any configuration for it. Additional access restrictions like SELinux can also prevent unwanted tools to access the socket and keep resolution working for trusted users.
CVSS Score
5.5
EPSS Score
0.0
Published
2025-12-18
BullWall Ransomware Containment may not always detect an encrypted file. This issue affects a specific file inspection method that evaluates file content based on header bytes. An authenticated attacker could encrypt files, preserving the first four bytes and preventing this particular method from triggering. The affected product implements additional integrity-based detection mechanisms capable of identifying file corruption or encryption for some common file extensions independent of header bytes. As a result, this vulnerability does not represent a complete bypass of ransomware detection, but a limitation of one detection method when evaluated independently. Versions 4.6.0.0, 4.6.0.6, 4.6.0.7, and 4.6.1.4 are affected. Other versions may also be affected. BullWall plans to improve detection method documentation.
CVSS Score
7.1
EPSS Score
0.0
Published
2025-12-18
BullWall Ransomware Containment supports configurable file and directory exclusions such as '$RECYCLE.BIN' to balance monitoring scope and performance. Certain exclusion patterns could allow an authenticated attacker to rename directories in a way that avoids monitoring. Fixed in 4.6.1.14 and 5.0.0.42, which remove hardcoded exclusion behavior and exposes exclusion handling as configurable settings.
CVSS Score
8.8
EPSS Score
0.0
Published
2025-12-18
Advantech WebAccess/SCADA
is vulnerable to absolute directory traversal, which may allow an attacker to determine the existence of arbitrary files.
CVSS Score
4.3
EPSS Score
0.001
Published
2025-12-18
Advantech WebAccess/SCADA
is vulnerable to unrestricted file upload, which may allow an attacker to remotely execute arbitrary code.
CVSS Score
8.8
EPSS Score
0.001
Published
2025-12-18
Advantech WebAccess/SCADA is vulnerable to directory traversal, which may allow an attacker to delete arbitrary files.
CVSS Score
8.1
EPSS Score
0.002
Published
2025-12-18
A stored cross-site scripting (XSS) vulnerability in Simple Machines Forum v2.1.6 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Forum Name parameter.
CVSS Score
6.1
EPSS Score
0.001
Published
2025-12-18
A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface component) in version upf-epc-pfcpiface:2.1.3-dev. When the UPF receives a PFCP Session Report Response that is missing the mandatory Cause Information Element, the session report handler dereferences a nil pointer instead of rejecting the malformed message. This triggers a panic and terminates the UPF process. An attacker who can send PFCP Session Report Response messages to the UPF's N4/PFCP endpoint can exploit this flaw to repeatedly crash the UPF and disrupt user-plane services.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-12-18
A security flaw has been discovered in Campcodes Advanced Voting Management System 1.0. The impacted element is an unknown function of the file /admin/voters_edit.php of the component Password Handler. Performing manipulation of the argument ID results in improper authorization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be exploited.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-12-18
A stored cross-site scripting vulnerability in Kentico Xperience allows attackers to inject malicious scripts via form validation rule configuration. Attackers can exploit this vulnerability to execute malicious scripts that will run in users' browsers.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-12-18