CVE-2026-33278

NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the...

CVE-2026-33278

NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the...

EUVD-2026-31075

NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the...

CVE-2026-33278

NLnet Labs Unbound 1.19.1–1.25.0 contains a vulnerability in the DNSSEC validator: during NSEC3-budget–driven validation suspensions, Unbound deep-copies response messages and a struct-assignment overwrites the destination pointer with the source pointer. After freeing the sub-query region, the v...

CVE-2026-32792

Affected software : NLnet Labs Unbound 1.6.2 through 1.25.0 (with DNSCrypt support enabled via --enable-dnscrypt). Root cause : A malformed DNSCrypt query can underflow the DNSCrypt packet reading, causing Unbound to read beyond the buffer and potentially trigger a heap overflow, depending on all...

CVE-2026-32792 Packet of death with DNSCrypt

NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support '--enable-dnscrypt'. A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit...

EUVD-2026-31077

NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support '--enable-dnscrypt'. A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit...

CVE-2026-32792 Packet of death with DNSCrypt

NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support '--enable-dnscrypt'. A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit...

CVE-2026-32792

NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support '--enable-dnscrypt'. A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit...

CVE-2026-32792

NLnet Labs Unbound 1.6.2 up to and including version 1.25.0 has a denial of service vulnerability when compiled with DNSCrypt support '--enable-dnscrypt'. A bad DNSCrypt query could underflow Unbound's DNSCrypt packet reading procedure that may lead to heap overflow. A malicious actor can exploit...

Astra Linux – Vulnerability in unbound

Unbound versions up to and including 1.24.1 are vulnerable to possible domain hijack attacks. Promiscuous NS RRSets that complement positive DNS replies in the authority section can be used to trick resolvers into updating their delegation information for the zone. Typically, these RRSets are use...

Astra Linux – Vulnerability in unbound

Unbound before version 1.9.5 allows for an integer overflow in the regional allocator through regionalalloc. NOTE: The vendor denies that this is a vulnerability. Although the code may be vulnerable, an ongoing Unbound installation cannot be exploited remotely or locally...

Astra Linux – Vulnerability in unbound, bind9

The “Closest Encloser Proof” aspect of the DNS protocol as described in RFC 5155, when the guidance provided in RFC 9276 is skipped enables remote attackers to cause a denial of service resulting in high CPU usage for SHA-1 calculations through DNSSEC responses during a random subdomain attack,...

Astra Linux – Vulnerability in unbound

Before version 1.9.5, Unbound allowed for an integer overflow in the size calculation in respip/respip.c. NOTE: The vendor denies that this is a vulnerability. Although the code may be vulnerable, an active Unbound installation cannot be exploited remotely or locally...

Astra Linux – Vulnerability in Linux, Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: phonet/pep: refusal to enable an unbound pipe The ioctl function implicitly assumed that the socket was already bound to a valid local socket name, i.e., a Phonet object. If the socket was not bound, two problems would occur: 1 W...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: xsk: Fixed an use-after-free error during socket cleanup. A use-after-free error could occur if the xskdiag interface is used after the socket has been unbound from the device. This can happen either due to the socket being...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: dccp/tcp: Unhash sk from ehash for tb2 alloc failure after checkestalblished. syzkaller reported a warning 0 in inetcskdestroysock, with no repro. WARNONinetsksk-inetnum && !inetcsksk-icskbindhash; However, syzkaller’s log...

Astra Linux – Vulnerability in unbound

NLnet Labs Unbound, including version 1.16.1, is vulnerable to a new type of “ghost domain names” attack. The vulnerability operates by targeting an Unbound instance. When the cached delegation information is about to expire, Unbound queries for a rogue domain name. The rogue nameserver delays th...

Astra Linux – Vulnerability in unbound

A vulnerability called “Non-Responsive Delegation Attack” NRDelegation Attack has been discovered in various DNS resolution software. The NRDelegation Attack operates by creating a malicious delegation with a significant number of non-responsive name servers. The attack begins by querying a...

Astra Linux – Vulnerability in unbound

Before version 1.9.5, Unbound allowed configuration injection in the createunboundadservers.sh script after a successful man-in-the-middle attack on a cleartext HTTP session. NOTE: The vendor does not consider this a vulnerability of the Unbound software. createunboundadservers.sh is a contribute...