phpMyFAQ enables unauthenticated 2FA brute-force attack via /admin/check acceptance of arbitrary user-id

Summary The /admin/check endpoint in AuthenticationController implements SkipsAuthenticationCheck, making it reachable without any prior authentication. An anonymous attacker Bob can POST arbitrary user-id and token values to brute-force any user's 6-digit TOTP code. No rate limiting exists. The...

CVE-2026-0300

A buffer overflow vulnerability in the User-ID™ Authentication Portal aka Captive Portal service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. T...

CVE-2026-0300 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

A buffer overflow vulnerability in the User-ID™ Authentication Portal aka Captive Portal service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. T...

CVE-2026-0300

A buffer overflow vulnerability in the User-ID™ Authentication Portal aka Captive Portal service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. T...

CVE-2026-0300

CVE-2026-0300 is a buffer-overflow vulnerability in the PAN-OS User-ID Authentication Portal (Captive Portal) that allows unauthenticated remote code execution with root privileges on affected PA-Series and VM-Series firewalls. Exploitation has been observed in the wild when the portal is exposed...

CVE-2026-0300 PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

A buffer overflow vulnerability in the User-ID™ Authentication Portal aka Captive Portal service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. T...

Exploit for CVE-2026-0300

CVE-2026-0300-PANOS Security Rese...

Vulnerability handling in Palo Alto Networks PAN-OS

Palo Alto Networks has identified a vulnerability in PAN-OS, specifically in the User-ID Authentication Portal component of the PA-Series and VM-Series firewalls. The vulnerability involves a buffer overflow in the User-ID Authentication Portal, allowing unauthenticated attackers to execute...

The vulnerability of the User-ID authentication service of the PAN-OS operating system allows a perpetrator to execute arbitrary code with root privileges.

The vulnerability of the User-ID authentication service in the PAN-OS operating system is related to writing beyond buffer boundaries. Exploiting this vulnerability allows a malicious actor to execute arbitrary code with root privileges by sending specially crafted packets...

CVE-2026-0300: Out-of-bounds Write

A buffer overflow vulnerability in the User-ID™ Authentication Portal aka Captive Portal service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. T...

Palo Alto Networks PAN-OS 缓冲区错误漏洞

Palo Alto Networks PAN-OS is an operating system developed by Palo Alto Networks for its firewall devices. There is a buffer overflow vulnerability in Palo Alto Networks PAN-OS, which stems from insufficient boundary checks during the processing of certain data packets by the User-ID Authenticati...

PT-2026-37340

Name of the Vulnerable Software and Affected Versions Palo Alto Networks PAN-OS versions 10.2.0 through 10.2.4 Description A buffer overflow an out-of-bounds write exists in the User-ID Authentication Portal also known as Captive Portal service. This flaw allows an unauthenticated remote attacker...

PAN-OS: Unauthenticated user initiated Buffer Overflow Vulnerability in User-ID™ Authentication Portal

A buffer overflow vulnerability in the User-ID™ Authentication Portal aka Captive Portal service of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted packets. T...

authd: Primary group ID is incorrectly set to value of UID

authd 0.6.0 contains a bug which can lead to an incorrect primary group ID. It affects users whose primary group ID i.e. the GID in the user record differs from their UID. There are two ways which can lead to this: 1. The user was created with authd &2 continue fi if "$OLDGID"...

EUVD-2026-27323

An issue was discovered in Gambio 4.9.2.0 patched in 2024-02 v1.0.0 for GX4 v4.0.0.0 to v4.9.2.0. The password reset function can be bypassed to set arbitrary passwords for arbitrary accounts if the ID is known...

CVE-2026-34408

An issue was discovered in Gambio 4.9.2.0 patched in 2024-02 v1.0.0 for GX4 v4.0.0.0 to v4.9.2.0. The password reset function can be bypassed to set arbitrary passwords for arbitrary accounts if the ID is known...

sudo: Sudo: Privilege escalation due to failure in privilege drop calls

A flaw was found in Sudo. A local user could exploit a failure in the setuid, setgid, or setgroups calls, which are used to drop privileges before running the mailer. This oversight allows for privilege escalation, enabling the user to gain elevated access on the system...

VulnCheck KEV: CVE-2026-0300

Palo Alto Networks PAN-OS contains an out-of-bounds write vulnerability in the User-ID Authentication Portal aka Captive Portal service that can allow an unauthenticated attacker to execute arbitrary code with root privileges on the PA-Series and VM-Series firewalls by sending specially crafted...

Palo Alto Networks PAN-OS 10.2.x / 11.1.x / 11.2.x / 12.1.x Vulnerability

The version of Palo Alto Networks PAN-OS running on the remote host is a vulnerable version of 10.2.x, 11.1.x, 11.2.x, or 12.1.x. It is, therefore, affected by a vulnerability. A buffer overflow vulnerability in the User-ID Authentication Portal aka Captive Portal service of Palo Alto Networks...

OpenSSH: OpenSSH: Privilege escalation via scp legacy protocol when not preserving file mode

A flaw was found in OpenSSH. When the scp command is used by a root user to download a file with the legacy protocol option -O and without preserving original file permissions -p, the downloaded file can be installed with elevated privileges setuid or setgid. This unexpected behavior could allow ...