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CVE-2026-16527

Pcp: pcp pmproxy: unauthenticated access to /store endpoint allows bypassing pmcd access rules

An unauthenticated remote attacker can bypass access controls by sending crafted requests to the PCP pmproxy /store endpoint. This allows the attacker to overwrite any PMDA metric, leading to arbitrary code execution and system takeover.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift and 7 more
CVE-2026-16526

Pcp: pcp: privilege escalation to root via linux_sockets pmda vulnerability

A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitrary commands as root.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift and 7 more
CVE-2026-16524

Pcp: pcp linux_sockets pmda: arbitrary command execution via command injection

A command injection flaw in PCP's linux_sockets PMDA allows malicious shell metacharacters via the network.persocket.filter metric. This failed validation lets attackers execute arbitrary commands as the PMDA user when metrics refresh.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift and 7 more
CVE-2026-1933

Samba: missing access check on reparse point operations

A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Redhat Samba
Products
Enterprise Linux Enterprise Linux Eus Openshift and 8 more
CVE-2026-1761

Libsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http response

A flaw was found in libsoup. This stack-based buffer overflow vulnerability occurs during the parsing of multipart HTTP responses due to an incorrect length calculation. A remote attacker can exploit this by sending a specially crafted multipart HTTP response, which can lead to memory corruption. This issue may result in application crashes or arbitrary code execution in applications that process untrusted server responses, and it does not require authentication or user interaction.

CVSS 3.1 · 8.6 High EPSS 1.1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift Devspaces and 6 more
CVE-2026-13601

Yelp: yelp-xsl: overly permissive content security policy in yelp allows host file disclosure from flatpak applications

A flaw was found in Yelp due to an overly permissive Content Security Policy (CSP) implementation provided by yelp-xsl. A malicious Flatpak application can open crafted help content through the OpenURI portal. By embedding an untrusted CSS stylesheet within a structured SVG document, attacker-controlled content can bypass Flatpak's intended sandbox isolation, allowing Yelp to evaluate local XML inclusions and disclose arbitrary user-readable host files through remote CSS resource requests. This may result in the unauthorized disclosure of sensitive information.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Gnome Redhat
Products
Yelp Enterprise Linux Rhel Aus and 5 more
CVE-2026-13097

Ipa: privilege escalation via krbcanonicalname manipulation due to realm-unaware uniqueness enforcement in freeipa ldap datastore

A privilege escalation flaw was found in FreeIPA. The uniqueness constraint enforced on Kerberos principal name attributes in the 389-ds directory server does not properly account for equivalent representations of the same principal name, allowing a user with sufficient LDAP write privileges to create a service principal that impersonates an existing privileged one. This can lead to unauthorized acquisition of Kerberos service tickets for sensitive services, potentially resulting in full domain compromise.

CVSS 3.1 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Freeipa Redhat
Products
Freeipa Enterprise Linux Enterprise Linux Eus and 6 more
CVE-2026-12912

Libtiff: libtiff: heap-based buffer overflow via crafted pixarlog-compressed tiff image

A flaw was found in libtiff. A remote attacker could exploit this vulnerability by providing a specially crafted PixarLog-compressed TIFF image. This issue occurs when decoding Pixarlog codec images with the PIXARLOGDATAFMT_8BITABGR output format and a specific stride value, leading to a heap-based buffer overflow. This could potentially result in arbitrary code execution or a denial of service (DoS).

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Vendors
Libtiff Redhat
Products
Libtiff Enterprise Linux Enterprise Linux Eus and 9 more
CVE-2026-16445

Dracut: dracut: root code execution via dhcp options command injection in networkmanager initrd module

A flaw was found in dracut. A remote attacker on the adjacent network can exploit this vulnerability by providing specially crafted DHCP options, such as a malicious root-path, next-server, or bootfile name, to a system using dracut's NetworkManager-based initrd network module. These options are improperly handled and written into a temporary shell script without proper escaping, leading to command injection. This allows the attacker to achieve root code execution within the initramfs during system boot.

CVSS 3.1 · 7.5 High EPSS 3.2% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Hummingbird Openshift and 5 more
CVE-2026-15722

389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing

A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remote unauthenticated attacker can crash the LDAP server by sending a crafted StartNSDS50ReplicationRequest extended operation containing a replica ID field with more than 16 digit characters. The overflow occurs during payload decoding, before any authorization check. Stack protectors limit impact to denial of service.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
389 Directory Server Directory Server Directory Server E4s and 9 more
CVE-2026-14474

Sssd: sssd: sudo ldap provider searches entire directory tree for sudorole objects by default, enabling privilege escalation

A flaw was found in SSSD's LDAP sudo provider. When the ldap_sudo_search_base option is not explicitly configured, SSSD searches the entire LDAP directory tree for sudoRole objects. An authenticated attacker with write access to any subtree can inject a sudoRole object granting root-level sudo privileges on all SSSD-enrolled hosts.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift and 6 more
CVE-2025-66287

Webkitgtk: processing maliciously crafted web content may lead to an unexpected process crash

A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Rhel Aus Rhel E4s and 4 more
CVE-2025-5914

Libarchive: double free at archive_read_format_rar_seek_data() in archive_read_support_format_rar.c

A vulnerability has been identified in the libarchive library, specifically within the archive_read_format_rar_seek_data() function. This flaw involves an integer overflow that can ultimately lead to a double-free condition. Exploiting a double-free vulnerability can result in memory corruption, enabling an attacker to execute arbitrary code or cause a denial-of-service condition.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Libarchive Redhat
Products
Libarchive Cert Manager Confidential Compute Attestation and 16 more
CVE-2026-11837

Ansible-collection-ansible-posix: ansible.posix authorized_key: local privilege escalation via symlink-following chown

A local privilege escalation vulnerability was found in the ansible.posix authorized_key module. The module's keyfile() function uses os.chown() instead of os.lchown() and opens files without O_NOFOLLOW when managing SSH authorized keys. An unprivileged local user can pre-stage symbolic links in their ~/.ssh directory to redirect file ownership changes to arbitrary system paths when an operator runs the authorized_key task as root, leading to local privilege escalation.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openstack and 5 more
CVE-2026-11774

389-ds-base: 389-ds-base: integer overflow in sasl packet length bypasses size limit leading to heap buffer overflow

An integer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_start_packet(), adding sizeof(uint32_t) to a crafted SASL packet length prefix of 0xFFFFFFFC causes unsigned wraparound to zero, bypassing the nsslapd-maxsasliosize limit and leading to a heap buffer overflow of up to approximately 2 megabytes of attacker-controlled data. After a successful SASL bind with integrity protection (SSF > 0), a remote attacker can cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, enrolled host, or service account can trigger this vulnerability over the network. This flaw is independent of CVE-2025-14905, which patched schema.c only and did not modify sasl_io.c.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Directory Server Directory Server E4s Enterprise Linux and 8 more
CVE-2026-11610

389-ds-base: 389-ds-base: heap buffer overflow in sasl_io_recv() via padded sasl unbind

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet that is copied into a 512-byte heap receive buffer without a bounds check in sasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of attacker-controlled data to overflow the buffer, causing a denial of service (server crash). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, any enrolled host, or any service account can trigger this vulnerability over the network after authenticating via GSSAPI. The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow in schema.c only.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Directory Server Directory Server E4s Enterprise Linux and 7 more
CVE-2026-0719

Libsoup: signed to unsigned conversion error leading to stack-based buffer overflow in libsoup ntlm authentication

A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.

CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift Devspaces and 6 more
CVE-2025-8067

Udisks: out-of-bounds read in udisks daemon

A flaw was found in the Udisks daemon, where it allows unprivileged users to create loop devices using the D-BUS system. This is achieved via the loop device handler, which handles requests sent through the D-BUS interface. As two of the parameters of this handle, it receives the file descriptor list and index specifying the file where the loop device should be backed. The function itself validates the index value to ensure it isn't bigger than the maximum value allowed. However, it fails to validate the lower bound, allowing the index parameter to be a negative value. Under these circumstances, an attacker can cause the UDisks daemon to crash or perform a local privilege escalation by gaining access to files owned by privileged users.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Rhel Aus Rhel E4s and 4 more
CVE-2025-7425

Libxslt: libxml2: heap use-after-free in libxslt caused by atype corruption in xmlattrptr

A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Cert Manager Discovery Enterprise Linux and 14 more
CVE-2026-10118

Poppler: integer overflow in poppler splashoutputdev::tilingpatternfill leads to heap buffer overflow via unchecked dimension multiplication

A flaw was found in Poppler's Splash backend. A remote attacker could exploit this vulnerability by crafting a malicious PDF file that, when rendered, triggers an integer overflow in the `tilingPatternFill` function. This overflow leads to an undersized heap memory allocation, allowing a subsequent out-of-bounds write. Successful exploitation could result in arbitrary code execution, information disclosure, or denial of service within the context of the application processing the PDF.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Ai Inference Server Enterprise Linux Enterprise Linux Eus and 9 more