CVE-2026-124747

Busybox: heap buffer overflow in wget ftp resume when the resume offset exceeds the reported file size

A flaw was found in BusyBox. When resuming a download over File Transfer Protocol (FTP), the wget utility fails to verify that the resume offset does not exceed the file size reported by the server, resulting in an integer calculation error. A malicious FTP server or an on-path network attacker can exploit this issue by returning crafted file size metadata, triggering a heap-based buffer overflow with attacker-controlled data. Successful exploitation may allow an attacker to execute arbitrary code or crash the application, resulting in a denial of service (DoS).

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-12610

Sssd: use-after-free crash in sssd' 'sssd_pam' process

A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat Sssd

Products

Sssd Enterprise Linux Hardened Images and 6 more

CVE-2026-121995

Gdb: gdb: stack buffer overflow in parse_tracepoint_definition via stale rs->buf tail

A stack buffer overflow in the GDB client's tracepoint upload handler allows an attacker-controlled debug stub to corrupt stack memory automatically during connection setup. The overflow results from GDB reading beyond the current reply boundary into a stale prior reply in the shared packet buffer.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 2 more

CVE-2026-71226

Libkcapi: memory corruption via uncanceled aio requests on error in libkcapi's one-shot aio path

Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Redhat Smuellerdd

Products

Enterprise Linux Enterprise Linux Eus Hardened Images and 7 more

CVE-2026-101296

Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms

A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Apache Apache Software Foundation Redhat

Products

Apache Tomcat Tomcat Tomcat and 1 more

CVE-2026-87876

Cups: openprinting cups: remaining case-insensitive username matching in scheduler side paths (cve-2026-27447 follow-up)

Two case-insensitive comparisons on request-derived usernames outside the main authorization path in CUPS's scheduler (printer ACL validation and private-attribute filtering) could allow bypass of username-based access controls in certain configurations.

CVSS 3.1 · 3 Low EPSS < 1% KEV · Not listed

Vendors

Openprinting Redhat

Products

Cups Enterprise Linux Hardened Images and 4 more

CVE-2026-85498

Polkit: regression in cve-2026-4897 fix (polkit read_cookie()) - stack buffer underflow

A flaw was found in polkit. When processing input that begins with a null byte, an arithmetic error in the authentication agent helper causes an integer underflow during buffer length calculation, resulting in an out-of-bounds memory read. An attacker capable of supplying crafted input can trigger this flaw, potentially causing an application crash and resulting in a Denial of Service (DoS).

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed

Vendors

Polkit Project Redhat

Products

Polkit Enterprise Linux Hummingbird and 2 more

CVE-2026-59849

Libssh: libssh: denial of service via automatic certificate authentication loop

A flaw was found in libssh. Logic errors in automatic certificate-based public key authentication can cause libssh clients to loop indefinitely when configured certificates are missing or repeatedly rejected by a server, leading to denial of service.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Libssh Redhat

Products

Libssh Enterprise Linux Enterprise Linux For Els and 9 more

CVE-2026-59842

Libssh: libssh: information disclosure via short gssapi curve25519 public key

A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Libssh Redhat

Products

Libssh Enterprise Linux Enterprise Linux For Els and 9 more

CVE-2026-55654

Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator cleanup due to missing null sentinel termination

A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Openbsd Openssh Redhat

Products

Openssh Openssh Enterprise Linux and 6 more

CVE-2026-5419

Gnutls: gnutls: information disclosure via timing side-channel in pkcs#7 padding removal

A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of information disclosure.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Gnu Redhat

Products

Gnutls Cert Manager Discovery and 11 more

CVE-2026-3832

Gnutls: gnutls: security bypass allows acceptance of revoked server certificates via crafted ocsp response

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Gnu Redhat

Products

Gnutls Cert Manager Discovery and 8 more

CVE-2026-44605

Rpm: heap buffer overflow in ndb slot table parsing

A flaw was found in the RPM Package Manager (RPM). A local user could be affected by a heap buffer overflow vulnerability when processing a specially crafted NDB database file. This issue arises from an error in how RPM handles certain calculations during file parsing, leading to an incorrect memory allocation. An attacker could leverage this to cause a denial of service, making the system unavailable.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Hardened Images Hummingbird and 2 more

CVE-2026-3184

Util-linux: util-linux: access control bypass due to improper hostname canonicalization

A flaw was found in util-linux. Improper hostname canonicalization in the `login(1)` utility, when invoked with the `-h` option, can modify the supplied remote hostname before setting `PAM_RHOST`. A remote attacker could exploit this by providing a specially crafted hostname, potentially bypassing host-based Pluggable Authentication Modules (PAM) access control rules that rely on fully qualified domain names. This could lead to unauthorized access.

CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed

Vendors

Kernel Linux Redhat

Products

Util-linux Util-linux Enterprise Linux and 4 more

CVE-2026-18839

Popt-devel: popt-static: size_t underflow in singleoptionhelp

An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print help under those conditions may cause that application to crash or fail to display help, resulting in a denial of service of the affected application.

CVSS 3.1 · 2.2 Low EPSS < 1% KEV · Not listed

Vendors

Popt-devel Redhat

Products

Popt-static Enterprise Linux Hardened Images and 5 more

CVE-2026-18743

Popt-devel: popt-static: short realloc in poptconfigfiletostring

A flaw was found in popt. This vulnerability allows an attacker to provide specially crafted configuration content to a host, which, when loaded, can lead to a small memory corruption issue. This occurs because of an error in how the `poptConfigFileToString` function reallocates memory for buffers. Successful exploitation could result in heap metadata corruption, potentially causing the affected process to become unavailable (denial of service).

CVSS 3.1 · 2.5 Low EPSS < 1% KEV · Not listed

Vendors

Redhat Rpm-software-management

Products

Enterprise Linux Hardened Images Hummingbird and 5 more

CVE-2026-18739

Popt-devel: popt-static: off-by-one in poptstuffargs

A flaw was found in popt, a command-line option parsing library. An off-by-one error in the poptStuffArgs function, when repeatedly called by a host application or through deep alias nesting, can lead to corruption of internal program data. This corruption could potentially enable a local attacker to execute arbitrary code if the host application then unsafely processes the altered data.

CVSS 3.1 · 2.5 Low EPSS < 1% KEV · Not listed

Vendors

Popt-devel Redhat

Products

Popt-static Enterprise Linux Hummingbird and 3 more

CVE-2026-17591

Libarchive: libarchive: use-after-free via aliased mac metadata copy

A flaw was found in libarchive. An attacker can cause a Denial of Service (DoS) or potential information disclosure due to a use-after-free vulnerability, which occurs when a program reads memory that has already been released. This issue arises when the archive_entry_copy_mac_metadata() function deallocates an internal buffer before completing a data copy. An attacker who can supply input to an application utilizing this function can trigger the flaw to crash the application or read uninitialized memory data.

CVSS 3.1 · 3.6 Low EPSS < 1% KEV · Not listed

Vendors

Libarchive Red Hat Redhat

Products

Libarchive Enterprise Linux Enterprise Linux and 4 more

CVE-2026-16517

Libarchive: libarchive: signed integer overflow in archive_write_zip_header

A signed integer overflow vulnerability was found in libarchive's ZIP writer. In the archive_write_zip_header function in archive_write_set_format_zip.c, when ZIP encryption is enabled and the entry file size is close to INT64_MAX, the addition of the encryption overhead to the entry size overflows int64_t, resulting in undefined behavior. This could lead to incorrect Zip64 extension decisions or potential memory corruption.

CVSS 3.1 · 2.9 Low EPSS < 1% KEV · Not listed

Vendors

Libarchive Redhat

Products

Libarchive Enterprise Linux Hardened Images and 4 more

CVE-2025-6170

Libxml2: stack buffer overflow in xmllint interactive shell command handling

A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.

CVSS 3.1 · 2.5 Low EPSS < 1% KEV · Not listed

Vendors

Redhat Xmlsoft

Products

Ai Inference Server Cert Manager Discovery and 17 more