CVE-2026-76578

Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci

A flaw was found in FreeIPA. The self-managed OTP token ACI does not require authentication and does not restrict which attributes may be added alongside the token entry. An unauthenticated LDAP client can exploit this, combined with a related flaw in the underlying directory server's ACI evaluation (tracked separately), to create an arbitrary attacker-controlled Kerberos principal and have it added to the administrators group. This allows a remote, unauthenticated attacker to obtain genuine FreeIPA administrator-group membership and perform administrative operations against the directory and, on SID-enabled deployments, other IdM services.

CVSS 3.1 · 9.8 Critical EPSS 1.3% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Freeipa and 6 more

CVE-2026-76561

Pki-core: dogtag/pki: certprofile-import allows code execution via unsanitized profile content (externalprocessconstraint)

A flaw was found in Dogtag PKI, as used by FreeIPA's certificate authority component. The certificate profile import functionality does not fully validate uploaded profile content beyond the profile ID. An authenticated user with CA Administrator privileges can exploit Dogtag's ExternalProcessConstraint mechanism to execute arbitrary commands with attacker-controlled environment variables, achieving code execution as the pkiuser account.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Certificate System Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-76560

389-ds-base: 389-ds: anonymous ldap client can defeat selfdn aci bind-rule checks via empty bind dn

A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated identity. This can allow an anonymous LDAP client to perform an operation, such as adding or modifying a directory entry, that a SELFDN-based ACI intended to restrict to a specific authenticated user.

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

Vendors

Redhat

Products

Directory Server Directory Server E4s Enterprise Linux and 7 more

CVE-2026-73198

Ipa: freeipa: unauthenticated dos in `/ipa/i18n_messages` via unbounded request body read

A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit a vulnerability in the `/ipa/i18n_messages` endpoint by sending an arbitrarily large request body. This can cause the service to consume excessive memory, leading to memory exhaustion, degraded responsiveness, and a denial of service (DoS) condition.

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

Vendors

Freeipa Redhat

Products

Freeipa Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-73197

Ipa: freeipa: unauthenticated dos in `/ipa/migration/migration.py` via unbounded request body read

A flaw was found in FreeIPA. A remote, unauthenticated attacker can exploit this vulnerability by sending oversized form POST requests to the `/ipa/migration/migration.py` endpoint. This can force the migration handler to read attacker-controlled request bodies fully into memory, leading to increased memory usage, slower request handling, and potential service disruption or denial of service.

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

Vendors

Freeipa Redhat

Products

Freeipa Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-72694

Mrtg: mrtg daemon symlink-following chown allows local privilege escalation via pid file path manipulation

A flaw was found in MRTG. When the MRTG daemon is started as a root user and subsequently drops privileges, a local, low-privileged attacker can exploit a symbolic link (symlink) following vulnerability. By influencing or pre-placing a symlink in the process ID (PID) file path, the attacker can trick the root process into changing the ownership of an arbitrary existing file to the daemon user. This can lead to local privilege escalation, allowing unauthorized access to or modification of sensitive files.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Mrtgconfig Redhat

Products

Mrtg Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-59692

Gstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback

A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker can send a certificate with an oversized Subject DN that exceeds the buffer, causing a stack buffer overflow and process crash, resulting in denial of service.

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

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-59691

Gstreamer1-plugins-bad-free: gstreamer: rfbsrc/librfb hextile heap out-of-bounds write with 16bpp framebuffer

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Gstreamer Redhat

Products

Gstreamer Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-63622

Libvirt: swtpm privilege escalation via symlink following

A flaw was found in libvirt. A local attacker, specifically a process running as the confined `swtpm` user, could exploit a symlink-following vulnerability in the `virFileChownFiles()` function. By planting a symbolic link within the `swtpm` state directory, the attacker could trick the root-level libvirt daemon into changing the ownership of an arbitrary file to the `swtpm` user. This allows for privilege escalation from the `swtpm` sandbox to root-level file ownership control.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Libvirt Redhat

Products

Libvirt Enterprise Linux Enterprise Linux Eus and 8 more

CVE-2026-54230

Abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file overwrites

A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport. Event scripts write output files using shell redirections without the O_NOFOLLOW flag. If the target file is replaced with a symlink, the shell process running as root follows the symlink and writes content to the symlink target, allowing arbitrary file overwrites on the system.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Fedoraproject Redhat

Products

Fedora Automatic Bug Reporting Tool Enterprise Linux and 5 more

CVE-2026-54228

Abrt: toctou race condition in abrt-dbus setelement allows arbitrary file writes to dump directories

A time-of-check time-of-use (TOCTOU) race condition was found in the abrt-dbus D-Bus service's SetElement method. Between dump directory creation and post-create event execution, any local user can call SetElement to write arbitrary text files into the root-owned dump directory, bypassing package validation and allowing crashes of unpackaged binaries to survive post-create processing.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Rhel Aus Rhel E4s and 3 more

CVE-2026-54229

Abrt: chownproblemdir succeeds during active post-create event processing due to inadequate locking

A race condition was found in the abrt-dbus D-Bus service's ChownProblemDir method. ChownProblemDir opens the dump directory with DD_OPEN_READONLY and calls dd_chown to change ownership of all files to the caller's uid, succeeding even while post-create event handlers hold a write lock. This allows an attacker to gain filesystem-level control of the dump directory while privileged event scripts are still running.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Rhel Aus Rhel E4s and 3 more

CVE-2026-52722

Gstreamer1-plugins-bad-free: gstreamer: signed integer overflow in vmnc decoder cursor payload handling

A signed integer overflow vulnerability was found in GStreamer's VMnc decoder. A crafted VMnc stream with large cursor dimensions can overflow signed integer payload-size arithmetic, bypassing a length check and leading to out-of-bounds reads. A remote attacker could trick a user into opening a specially crafted VMnc file, potentially causing a crash or information disclosure.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Gstreamer Project Redhat

Products

Gstreamer Plugin Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-52720

Gstreamer1-plugins-bad-free: gstreamer: heap buffer overflow via crafted vnc server rectangle in librfb

A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Gstreamer Project Redhat

Products

Gstreamer Plugin Enterprise Linux Enterprise Linux Eus and 6 more

CVE-2026-50264

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: out-of-bounds heap write in dri2 drigetbuffers/drigetbufferswithformat

An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat X.org

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 8 more

CVE-2026-50261

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat X.org

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 8 more

CVE-2026-50260

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in freecounter()

A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat X.org

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 8 more

CVE-2026-50258

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels

A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat X.org

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 7 more

CVE-2026-50259

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing

A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat X.org Xorg

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 9 more

CVE-2026-50257

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()

A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a second X connection destroys the fence, causing the use-after-free. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat X.org

Products

Enterprise Linux Enterprise Linux Eus Rhel Aus and 8 more