CVE-2026-45100

A flaw was found in OpenSIPS, a Session Initiation Protocol SIP server. A remote attacker can exploit a buffer overflow vulnerability in the s.b64encode string transformation. By sending a large SIP message header, the attacker can cause the base64 encoding process to write data beyond its intend...

CVE-2026-67859

A flaw was found in open62541. A remote attacker can exploit a buffer overflow vulnerability in the Discovery/LDS Local Discovery Server handling. This can lead to a denial of service, making the affected system unavailable...

CVE-2026-18103

A flaw was found in dhcp-server. A remote attacker with network access to the OMAPI Open Management Application Programming Interface port, especially if not secured with TSIG Transaction Signature key authentication, could send a specially crafted lease creation request. This request, containing...

CVE-2026-18103 Dhcp-server: dhcp-server: persistent denial of service due to buffer overflow via omapi

A flaw was found in dhcp-server. A remote attacker with network access to the OMAPI Open Management Application Programming Interface port, especially if not secured with TSIG Transaction Signature key authentication, could send a specially crafted lease creation request. This request, containing...

CVE-2026-18103

The CVE-2026-18103 entry concerns the dhcp-server component, where an attacker with network access to the OMAPI port (potentially without TSIG authentication) can craft a lease creation request containing an overly long InfiniBand MAC address. This input triggers a buffer overflow in print_hw_add...

CVE-2026-18103

A flaw was found in dhcp-server. A remote attacker with network access to the OMAPI Open Management Application Programming Interface port, especially if not secured with TSIG Transaction Signature key authentication, could send a specially crafted lease creation request. This request, containing...

CVE-2026-45537

OpenSIPS contains a buffer overflow in construct_uri() used to assemble SIP URIs. In versions before 3.6.6 and 4.0.0-rc1, components (protocol, username, domain, port, params) are concatenated into a fixed 1024-byte global BSS buffer without bounds checks. If a routing script supplies a long, att...

CVE-2026-45537 OpenSIPS: Global Buffer Overflow in construct_uri

OpenSIPS is a Session Initiation Protocol SIP server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the constructuri function concatenates multiple URI components protocol, username, domain, port, params into a fixed 1024-byte global BSS buffer without any bounds checking. When a routi...

CVE-2026-67858

Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server LDS is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allow...

CVE-2026-67859

Buffer Overflow vulnerability in open62541 v1.5.5 allows a remote attacker to cause a denial of service via the Discovery/LDS handling...

CVE-2026-67862

open62541 1.5.5 contains a buffer-overflow in the high-level attribute reading logic in src/client/uaclienthighlevel.c. This allows a remote attacker to cause a denial of service...

CVE-2026-67858

A flaw was found in open62541. When the Local Discovery Server LDS is configured with multicast discovery via the MDNSD backend, an unauthenticated remote attacker can exploit a buffer overflow vulnerability. By sending numerous unique discovery URLs in RegisterServer or RegisterServer2 requests,...

CVE-2026-45100 OpenSIPS: Buffer Overflow in Base64 Encode Transformation

OpenSIPS is a Session Initiation Protocol SIP server implementation. Versions 3.4.0-beta through 3.6.5 and 4.0.0-beta contain a buffer overflow in the s.b64encode string transformation. The size check for s.b64encode only verifies that the input fits within the 64 KB transformation buffer, but...

CVE-2026-45100

OpenSIPS contains a buffer overflow in the s.b64encode transformation affecting versions 3.4.0-beta through 3.6.5 and 4.0.0-beta. The 64 KB transformation buffer is overflowed because base64 encoding expands input by ~33%, so inputs around 49,153–65,535 bytes can overflow and overwrite adjacent m...

CVE-2026-45538

OpenSIPS prior to 4.0.0 is vulnerable to a stack buffer overflow in sip_to_json() when processing a SIP header name longer than 255 bytes. The function copies header names into a fixed 255-byte stack buffer without bounds checking, even though header names can be ~65,000 bytes. A routing script t...

Libgcrypt: Libgcrypt: Denial of Service and buffer overflow via crafted ECDH ciphertext

A flaw was found in Libgcrypt. A remote attacker could exploit this vulnerability by sending crafted Elliptic Curve Diffie-Hellman ECDH ciphertext to the gcrypkdecrypt function. This can lead to a heap-based buffer overflow, potentially causing a denial of service DoS condition...

Moderate: Red Hat Security Advisory: libgcrypt security update

An update for libgcrypt is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

Moderate: Red Hat Security Advisory: libgcrypt security update

An update for libgcrypt is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

Libgcrypt: Libgcrypt: Denial of Service and buffer overflow via crafted ECDH ciphertext

A flaw was found in Libgcrypt. A remote attacker could exploit this vulnerability by sending crafted Elliptic Curve Diffie-Hellman ECDH ciphertext to the gcrypkdecrypt function. This can lead to a heap-based buffer overflow, potentially causing a denial of service DoS condition...

CVE-2026-49435

Keysight IxChariot Endpoint and related products are affected by a stack-based buffer overflow. An unauthenticated remote attacker can send a crafted packet to trigger arbitrary code execution with administrative privileges. Documents consistently identify the vulnerable component as IxChariot en...