CVE-2026-27654

CVE-2026-27654 NGINX ngxhttpdavmodule Heap Buffer Overflow via sizet Underflow Remote DoS / Potential RCE Description ngxhttpdavcopymovehandler in src/http/modules/ngxhttpdavmodule.c computes the destination URI length by subtracting the location prefix length from the Destination header's URI pa...

CVE-2026-27654-PoC

CVE-2026-27654 – nginx ngxhttpdavmodule DAV Alias Path Handling PoC This repository provides a proof‑of‑concept exploit for CVE‑2026‑27654 , a heap‑overflow vulnerability in the ngxhttpdavmodule of nginx. The bug arises from a size‑t underflow when handling MOVE/COPY requests with specially craft...

CVE-2026-49868

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, parsereply in sys/net/applicationlayer/dhcpv6/client.c omits minimum-length validation before passing IAPD and IANA option bodies to sub-option parsers. A...

CVE-2026-49868 RIOT: DHCPv6 client _parse_reply() missing sub-option length check leads to size_t underflow and unbounded OOB heap read

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, parsereply in sys/net/applicationlayer/dhcpv6/client.c omits minimum-length validation before passing IAPD and IANA option bodies to sub-option parsers. A...

CVE-2026-49868

The RIOT open-source microcontroller operating system is vulnerable to an unbounded out-of-bounds (OOB) heap read due to a missing minimum-length validation in the _parse_reply() function within sys/net/application_layer/dhcpv6/client.c. If MODULE_DHCPV6_CLIENT_IA_PD is enabled, a malicious or co...

CVE-2026-49868 RIOT: DHCPv6 client _parse_reply() missing sub-option length check leads to size_t underflow and unbounded OOB heap read

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, parsereply in sys/net/applicationlayer/dhcpv6/client.c omits minimum-length validation before passing IAPD and IANA option bodies to sub-option parsers. A...

CVE-2026-53922 odhcpd: pre-auth remote DoS via size_t underflow in dhcpv6_ia_handle_IAs (stack BOF, canary-terminated)

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. In commit cfddd56 and earlier, an unauthenticated host on the same link can first obtain two bindings through normal DHCPv6 SOLICIT and REQUEST exchanges and then send a crafted RENEW containing multiple IANA options. ...

CVE-2026-53922 odhcpd: pre-auth remote DoS via size_t underflow in dhcpv6_ia_handle_IAs (stack BOF, canary-terminated)

odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. In commit cfddd56 and earlier, an unauthenticated host on the same link can first obtain two bindings through normal DHCPv6 SOLICIT and REQUEST exchanges and then send a crafted RENEW containing multiple IANA options. ...

CVE-2026-53922

The odhcpd DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt is vulnerable to a pre-auth remote Denial of Service (DoS) . In versions prior to commit cfddd56 , an unauthenticated host on the same link can trigger a size_t underflow within the dhcpv6_ia_handle_IAs function. By sendin...

Rocky Linux 8 [CIQ] Security Update: bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc Multiple Vulnerabilities (crlsa-2021_2714)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-20212714 advisory. kernel: sizet-to-int conversion vulnerability in the filesystem layer CVE-2021-33909 kernel: race condition for removal of the HCI controller CVE-2021-3239...

CVE-2026-44235

A flaw was found in rabbitmq-c, a C-language AMQP Advanced Message Queuing Protocol client library. A malicious AMQP server or an on-path attacker can send an undersized HEADER or METHOD frame during client login, leading to an unsigned sizet underflow. This underflow causes an out-of-bounds read...

SUSE CVE-2026-44235

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned sizet underflow in amqphandleinput in librabbitmq/amqpconnection.c. The parser subtracts HEADERSIZE, fixed...

CVE-2026-44235 rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned sizet underflow in amqphandleinput in librabbitmq/amqpconnection.c. The parser subtracts HEADERSIZE, fixed...

EUVD-2026-82333

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned sizet underflow in amqphandleinput in librabbitmq/amqpconnection.c. The parser subtracts HEADERSIZE, fixed...

CVE-2026-44235 rabbitmq-c: size_t underflow in AMQP frame length computation leads to out-of-bounds read

rabbitmq-c is a C-language AMQP client library for RabbitMQ. Prior to 0.16.0, a malicious AMQP server can send an undersized HEADER or METHOD frame during client login and cause unsigned sizet underflow in amqphandleinput in librabbitmq/amqpconnection.c. The parser subtracts HEADERSIZE, fixed...

CVE-2026-44235

rabbitmq-c (a C-language AMQP client library) prior to 0.16.0 contains an unsigned size_t underflow in amqp_handle_input() (librabbitmq/amqp_connection.c). A malicious AMQP server can send an undersized HEADER or METHOD frame during client login, causing the computed encoded.len to wrap to 0xffff...

Astra Linux – Vulnerability in imagemagick

The function WritePALMImage in /coders/palm.c uses sizet type conversions in several parts of the calculation. This could lead to values that are outside the range of the representable type unsigned long, resulting in undefined behavior when a malicious input file is processed by ImageMagick...

CVE-2026-89266

stbvorbis through 1.22 contains a heap buffer overflow in startdecoder where the codebook multiplicands allocation size is truncated from sizet to int. Attackers can craft a malicious Ogg Vorbis file with large entries and dimensions values to trigger out-of-bounds writes, causing process crashes...

AZL-99681 CVE-2026-80798 affecting package kernel 6.6.150.1-1

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: reject PDUs shorter than the LLCP header Every LLCP PDU begins with a two-byte header DSAP/SSAP + PTYPE, but the receive path never checked that a frame is at least LLCPHEADERSIZE bytes before parsing it. nfcllcprxskb...

CVE-2026-80798

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: reject PDUs shorter than the LLCP header Every LLCP PDU begins with a two-byte header DSAP/SSAP + PTYPE, but the receive path never checked that a frame is at least LLCPHEADERSIZE bytes before parsing it. nfcllcprxskb...