UBUNTU-CVE-2026-42764

Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation disabled. Impact summary: NULL pointer dereference typically causes abnormal termination of the affected QUIC server process and a Denial ...

Microsoft Windows TCP/IP 缓冲区错误漏洞

Microsoft Windows TCP/IP is a component provided by Microsoft Corporation that offers TCP/IP configuration functions for Windows. There are security vulnerabilities associated with Microsoft Windows TCP/IP. The following products and versions are affected: Windows Server 2022, Windows 11 Version...

Microsoft Windows RDP 缓冲区错误漏洞

Microsoft Windows is an operating system used by personal devices by the American company Microsoft. The Microsoft Windows RDP component has a buffer error vulnerability. The following products and versions are affected: Windows 10 Version 1809 for 32-bit systems, Windows 10 Version 1809 for...

PT-2026-47834

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description A NULL pointer dereference occurs in the OpenSSL QUIC server when receiving a QUIC initial packet containing an invalid or expired token. This issue is triggered specifically when address...

OpenSSL 3.0.0 < 3.0.21 Multiple Vulnerabilities

The version of OpenSSL installed on the remote host is prior to 3.0.21. It is, therefore, affected by multiple vulnerabilities as referenced in the 3.0.21 advisory. - Issue summary: A specially crafted PKCS7 or S/MIME signed message could trigger a use-after-free during PKCS7 signature...

PT-2026-47837

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description A NULL pointer dereference can occur in a CMP client application when processing a crafted CMP response. An attacker controlling a CMP server or acting as a man-in-the-middle can send a CRMF...

PT-2026-48124

Name of the Vulnerable Software and Affected Versions Windows NTLM affected versions not specified Description Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an attacker to perform spoofing over a network, which can affect the system. Recommendations At the...

GHSA-QPGP-93VX-G8V8 Puma PROXY Protocol v1 Parser Allows Remote Memory Exhaustion

Impact PROXY protocol support for Puma was added in version 5.5.0. When PROXY protocol v1 support is enabled, Puma reads incoming bytes into an internal buffer. It waits for "\r\n" to determine whether a PROXY v1 line is present. If an attacker opens a TCP connection and continuously sends bytes...

Puma PROXY Protocol v1 Parser Allows Remote Memory Exhaustion

Impact PROXY protocol support for Puma was added in version 5.5.0. When PROXY protocol v1 support is enabled, Puma reads incoming bytes into an internal buffer. It waits for "\r\n" to determine whether a PROXY v1 line is present. If an attacker opens a TCP connection and continuously sends bytes...

GHSA-CMM3-54F8-PX4J Netty's Default QUIC token handler accepts any client-supplied token

NoQuicTokenHandler is the tokenHandler used when the application does not set one. Its writeToken returns false server will not send Retry — acceptable, but validateToken unconditionally return 0. In QuicheQuicServerCodec.handlePacket, a non-negative return from validateToken is interpreted as...

CVE-2026-44420

A heap-buffer overflow vulnerability exists in the FreeRDP server's clipboard channel. A remote attacker can exploit this by sending a specially crafted message to the server, which can crash the service Denial of Service or potentially allow the attacker to execute arbitrary code. Mitigation...

CVE-2026-44421

A heap-buffer-overflow vulnerability exists in FreeRDP when handling Remote Desktop Protocol Graphics RDPGFX. A malicious or compromised RDP server can exploit this flaw by sending specially crafted graphics packets to a connected client, potentially crashing the client application Denial of...

GHSA-6GHJ-FRRJ-JJJ3 Netty has Unbounded Direct Memory Consumption in its RedisDecoder

Summary An attacker can cause DoS by sending crafted Redis payloads across multiple connections without \r\n. This exhausts the server's direct memory pool OutOfDirectMemoryError, preventing legitimate connections from being processed. Details io.netty.handler.codec.redis.RedisDecoder decodes the...

Netty has Unbounded Direct Memory Consumption in its RedisDecoder

Summary An attacker can cause DoS by sending crafted Redis payloads across multiple connections without \r\n. This exhausts the server's direct memory pool OutOfDirectMemoryError, preventing legitimate connections from being processed. Details io.netty.handler.codec.redis.RedisDecoder decodes the...

Netty has an IPv6 Subnet Filter Bypass via Incorrect Comparator Masking

Summary An attacker can bypass IPv6 subnet rules due to an incorrect masking operation in IpSubnetFilterRule.compareTo. Valid public IP addresses can bypass the restrictions. Details io.netty.handler.ipfilter.IpSubnetFilterRulecompareTojava.net.InetSocketAddress method performs a bitwise AND...

CVE-2026-46306

A flaw was found in the Linux kernel's flow dissector. This vulnerability allows a remote attacker to cause a Denial of Service DoS by sending a specially crafted Point-to-Point Protocol over Ethernet PPPoE Protocol Field Compression PFC frame to an affected system. The incorrect processing of...

cowboy and gun affected by an HTTP Request/Response Splitting vulnerability

Improper Neutralization of CRLF Sequences in HTTP Headers 'HTTP Request/Response Splitting' vulnerability in ninenines cowlib allows HTTP response splitting via non-VCHAR bytes in structured-fields string values. cowhttpstructhd:escapestring/2 in cowlib only escapes \ and ", passing all other byt...

Authlib OAuth 2.0 has Open Redirect in Authorization API that allows attacker-controlled redirect_uri through unsupported response_type

Summary Authlib's OAuth 2.0 authorization endpoint can be turned into an unauthenticated open redirect when a request uses an unsupported responsetype and supplies an attacker-controlled redirecturi. The vulnerable behavior happens before client lookup and before any redirect URI validation. As a...

CVE-2026-46306

In the Linux kernel, the following vulnerability has been resolved: flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...

UBUNTU-CVE-2026-46306

In the Linux kernel, the following vulnerability has been resolved: flowdissector: do not dissect PPPoE PFC frames RFC 2516 Section 7 states that Protocol Field Compression PFC is NOT RECOMMENDED for PPPoE. In practice, pppd does not support negotiating PFC for PPPoE sessions, and the flow...