CVE-2026-66806
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVSS
5.5
Medium
EPSS
0.4%
p35
KEV
—
Exploit Today
11
0-100
Published: Aug 11, 2026 · Last modified: Aug 14, 2026 · CWE-125 · CWE-193
0.4%EPSS · 30 days0.5%
2026-08-122026-08-21
Off-by-one error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-687676.1 MED—
———hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist containing a line of exactly HCBUFSIZ_LARGE bytes.7hCVE-2026-772197.1 HIG—
——0GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed integer arithmetic; for sufficiently large values, the result wraps to a negative number, bypassing the bounds check and causing the pixel reader to access heap memory past the end of the allocated buffer. The over-read contents are interpreted as pixel color values and rendered on screen.1dCVE-2026-772376.5 MED—
——0Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports with configUSE_QUEUE_SETS=1 to read privileged kernel memory. To remediate this issue, users should upgrade to version 11.3.1 or later.1dCVE-2026-547897.5 HIG—
——0mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. Prior to 2.4.19.4, an out-of-bounds read and a one-byte out-of-bounds write exist in the state-cookie parser of `mod_auth_openidc`. The issue is fixed in version 2.4.19.4 by stopping the scan at the string terminator so a value-less token is rejected. No in-product workarounds are available. As a stop-gap, an upstream reverse proxy or WAF that rejects or normalizes malformed `Cookie` headers (tokens lacking `=`) can reduce exposure, but upgrading is the recommended remediation.1dCVE-2026-502786.5 MED—
——0iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions prior to 2.3.2.1 have a `CIccEmbedIO::Read8()` size_t underflow. The issue arises due to an embedded-profile read defect when parsing ICC profiles containing `icSigEmbeddedV5ProfileTag` data with `icSigEmbeddedProfileType` payloads. Version 2.3.2.1 patches the issue. No known workarounds are available.1dCVE-2026-206794.3 MED4.7%
——1The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination.1d