SUSE CVE-2026-14586

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, in DNS-over-QUIC environments, with high concurrency and under pressure, an assertion in libngtcp2 about monotonic timestamps could trigger and result in server termination and thus denial of service. When interfacing with libngtcp2, for...

SUSE CVE-2026-32665

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC DoQ is enabled, the first two bidirectional streams on a new QUIC connection streamid 0 and 4 bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte...

SUSE CVE-2026-41637

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, client terminated DNS-over-QUIC DoQ queries are not accounted properly by Unbound resulting in low-cost inflation of the waiting number of replies for already in-flight resolution queries. This results in degradation of resolution service f...

SUSE CVE-2026-55991

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a remote unauthenticated client can trigger a libngtcp2 assertion if compiled with assertions on and terminate the entire Unbound process using a single DNS-over-QUIC DoQ connection and one normal DNS query. This is caused by an erroneous...

DEBIAN-CVE-2026-66374

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

CVE-2026-66374

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

UBUNTU-CVE-2026-66374

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

CVE-2026-66374

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

CVE-2026-66374

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

EUVD-2026-48763

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

CVE-2026-66374

Knot Resolver is affected by a heap-based buffer overflow in the DoQ (DNS-over-QUIC) receive path that allows remote code execution on versions prior to 6.4.1. The vulnerability arises in the handling of DoQ traffic, enabling an attacker to trigger arbitrary code execution through crafted input s...

CVE-2026-66374

Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS-over-QUIC receive path...

Linux Distros Unpatched Vulnerability : CVE-2026-25800

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Quinn is a pure-Rust, async-compatible implementation of the IETF QUIC transport protocol. Starting in version 0.1.0 and prior to version 0.11.15, the Assembler...

Linux Distros Unpatched Vulnerability : CVE-2026-41637

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, client terminated DNS-over-QUIC DoQ queries are not accounted properly by Unbound resulting in low-cost...

Linux Distros Unpatched Vulnerability : CVE-2026-32665

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC DoQ is enabled, the first two bidirectional streams on a new QUIC...

Linux Distros Unpatched Vulnerability : CVE-2026-14586

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, in DNS-over-QUIC environments, with high concurrency and under pressure, an assertion in libngtcp2 abou...

Linux Distros Unpatched Vulnerability : CVE-2026-55991

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a remote unauthenticated client can trigger a libngtcp2 assertion if compiled with assertions on and...

Linux Distros Unpatched Vulnerability : CVE-2026-66374

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ DNS- over-QUIC receive path. CVE-2026-66374 Note that Nessus...

CVE-2026-14586

A flaw was found in Unbound. Under heavy DNS-over-QUIC DoQ traffic, a timing discrepancy in Unbound’s libngtcp2 library can trigger an assertion failure. This causes the server to crash unexpectedly, resulting in a denial of service DoS. Mitigation Disable DNS-over-QUIC DoQ by removing or...

SUSE CVE-2026-16318

The QUIC transport parameters extension handler in s2n-tls incorrectly uses s2nalloc instead of s2nrealloc to store the peer's transport parameters. When a TLS 1.3 connection goes through a HelloRetryRequest, the handler is called twice on the same connection. On the second call, s2nalloc zeroes...