CVE-2026-47838

CVE-2026-47838...

Microsoft Security Advisory CVE-2026-57108 – .NET Denial of Service Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in the .NET runtime cryptography layer CryptoNativeGetX509NameInfo. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability...

GHSA-RP2P-6CMP-JXJ9 Microsoft Security Advisory CVE-2026-57108 – .NET Denial of Service Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in the .NET runtime cryptography layer CryptoNativeGetX509NameInfo. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability...

Updated golang packages fix security vulnerabilities

The updated packages fix security vulnerabilities: mime: quadratic complexity in WordDecoder.DecodeHeader. CVE-2026-42504 net/textproto: arbitrary input are included in errors without any escaping. CVE-2026-42507 crypto/x509: split candidate hostname only once. CVE-2026-27145 os: Root escape via...

CVE-2026-40953

CVE-2026-40953 is a heap overflow in the certificate parsing function of Secure Access clients prior to 14.55. Attackers with local access and administrator permissions can create a denial of service attack against the client over which they have control...

CVE-2026-40953 Heap overflow in Secure Access clients

CVE-2026-40953 is a heap overflow in the certificate parsing function of Secure Access clients prior to 14.55. Attackers with local access and administrator permissions can create a denial of service attack against the client over which they have control...

EUVD-2026-44784

CVE-2026-40953 is a heap overflow in the certificate parsing function of Secure Access clients prior to 14.55. Attackers with local access and administrator permissions can create a denial of service attack against the client over which they have control...

CVE-2026-40953

CVE-2026-40953 is a heap overflow in the certificate parsing function of Secure Access clients prior to 14.55. Attackers with local access and administrator permissions can create a denial of service attack against the client over which they have control...

CVE-2026-40953

CVE-2026-40953: heap overflow in the certificate parsing function of Secure Access clients prior to 14.55. Local access with administrator permissions can cause a denial of service on the client. Affected software is Secure Access clients (versions before 14.55); root cause is a heap overflow in ...

JLSEC-2026-715 An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name (SAN)...

An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name SAN extension of X.509 certificates. A malformed certificate can specify an entry length larger than the enclosing sequence, causing the internal length counter to wrap during parsing. This results in incorrect...

JLSEC-2026-724 X.509 date buffer overflow in `wolfSSL_X509_notAfter` / `wolfSSL_X509_notBefore`

X.509 date buffer overflow in wolfSSLX509notAfter / wolfSSLX509notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS...

CVE-2026-58101

Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3EXTd2iext returns NULL when an extension's DER value fails to parse. basicC, ia5string, and authatt dereference its result without a NULL check. keyiddata also dereferences akid-keyid,...

SUSE-SU-2026:22315-1 Security update for openssl-3

This update for openssl-3 fixes the following issues - CVE-2026-2673: TLS 1.3 servers may choose unexpected key agreement group bsc1259652. - CVE-2026-7383: Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion bsc1266340. - CVE-2026-9076: Out-of-Bounds Read in CMS Password-Based...

RHEL 9 : runc (RHSA-2026:25253)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:25253 advisory. The runC tool is a lightweight, portable implementation of the Open Container Format OCF that provides container runtime. Security Fixes:...

CVE-2026-47838 Unauthorized User Impersonation when Using X.509 Client Certificates

SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. Affected versions: Spring Security 5.7....

EUVD-2026-32006

Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the cryptographic verification pipeline of Vanetza. When processing incoming V2X messages, the ASN.1 decoder accepts the structure as syntactically...

CVE-2026-44905 Vanetza: Remote Denial of Service via Uncaught OER Encoding Exception in Cryptographic Verification

Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the cryptographic verification pipeline of Vanetza. When processing incoming V2X messages, the ASN.1 decoder accepts the structure as syntactically...

RockyLinux 10 : image-builder (RLSA-2026:3840)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:3840 advisory. crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate CVE-2025-61729 golang: net/url: Memory exhaustion i...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: arm-trusted-firmware (UTSA-2026-016603)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-016603 advisory. Trusted Firmware-A through 2.8 has an out-of-bounds read in the X.509 parser for parsing boot certificates. This affects downstream use of getext and authnvctr...

RLSA-2026:3839 Important: image-builder security update

A local binary for building customized OS artifacts such as VM images and OSTree commits. Uses osbuild under the hood. Security Fixes: crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate CVE-2025-61729 golang: net/url: Memory exhaustion in query...