CVE-2026-68797
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVSS
5.5
Medio
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 11 ago 2026 · Última mod.: 11 ago 2026 · CWE-125
Sin historial EPSS suficiente todavía.
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-122326.1 MED—
———The Intel ALH digital-audio-interface driver function dai_alh_get_properties() in drivers/dai/intel/alh/alh.c used a caller-supplied int stream_id with no range validation. The value indexes the fixed-size static const uint8_t alh_handshake_map[64] array and scales a FIFO register address, so an out-of-range stream_id produces an out-of-bounds read of one byte at an attacker-chosen signed offset from the array. That byte is written into prop->dma_hs_id and the resulting struct dai_properties is copied back to the caller, leaking it.
dai_get_properties_copy() is a Zephyr __syscall, and its verifier z_vrfy_dai_get_properties_copy() (drivers/dai/dai_handlers.c) validates only the device-object permission and the destination buffer, not stream_id. A user-mode thread that has been granted access to the ALH DAI device object can therefore call the syscall with an arbitrary stream_id, crossing the userspace/kernel sandbox boundary.
The impact is a one-byte-per-call arbitrary-offset kernel information disclosure (and leakage of a computed kernel address via fifo_address); a stream_id that resolves to an unmapped page faults in kernel context, giving a local denial of service. Exploitation requires CONFIG_USERSPACE and device access, making this a local, moderate-severity issue. The fix rejects negative and too-large stream_id values up front and returns NULL, which the copy wrapper maps to -ENOENT.4hCVE-2026-186947.1 ALT—
———An issue in MongoDB Server's geospatial query processing could allow an authenticated user with write privileges to cause certain malformed geometry data to be stored and later processed without proper validation. Subsequent queries against this data could then result in the server accessing memory outside its intended bounds. This could result in a server crash (denial of service) and may expose a limited amount of server process memory.12hCVE-2026-186887.1 ALT—
———An issue in MongoDB Server's aggregation framework could allow an authenticated user to trigger an out-of-bounds memory read by providing a specially formed numeric parameter in a certain aggregation pipeline stage. This could result in a server crash (denial of service) and may potentially expose a limited amount of memory contents.12hCVE-2026-703286.5 MED—
———Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.15hCVE-2026-703276.5 MED—
———Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.15hCVE-2026-703155.5 MED—
———Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.11h