CVE-2026-78506
Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVSS
5.5
Medium
EPSS
—
KEV
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Exploit Today
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0-100
Published: Sep 8, 2026 · Last modified: Sep 8, 2026 · CWE-170
Not enough EPSS history yet.
Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-705877.5 HIG—
———Improper null termination in Windows Remote Desktop Protocol allows an unauthorized attacker to disclose information over a network.10hCVE-2026-457987.5 HIG40.8%
——12Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.5.0 until 4.14.6 and 5.0.0-beta2, compare_wazuh_versions() in src/shared/version_op.c copies the attacker-controlled enrollment V: field into a 10-byte stack buffer with strncpy() but does not explicitly terminate the buffer. The function is reachable before authentication through wazuh-authd on TCP port 1515 when anonymous TLS enrollment is enabled. A version string of at least nine non-null bytes can cause strchr() and strtok() to read beyond ver2 and can make strtok() write a null byte into adjacent stack memory, allowing a remote denial of service. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.21dCVE-2026-444525.9 MED34.5%
——10h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 8dc37cb, when h2o receives a ClientHello message over TLS or QUIC and it contains a zero-length SNI extension, the h2o server runs over the zero-length hostname while trying to copy the hostname, assuming that it is NULL-terminated. This is a potential denial-of-service attack vector in sense that it might trigger segmentation violation. This issue has been fixed by commit 8dc37cb.34dCVE-2026-123863.9 LOW3.2%
——1Improper null termination vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Pen allows Overflow Buffers.
This issue affects Pardus Pen: from <=4.1.5 before 4.2.1.65dCVE-2026-557388.8 HIG33.1%
——10A stack-based buffer overflow exists in the raw_to_header function in src/microtar.c in rxi microtar 0.1.0. The function copies the 100-byte name and linkname fields of a TAR header with strcpy without guaranteeing null termination of the source.30dCVE-2026-50679.8 CRI48.5%
——15A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header. The HTTP/1 header parser copies the header into a fixed-size buffer using a bounded copy that does not guarantee NUL termination when the input length reaches the buffer size. During upgrade handling the buffer is copied to a local stack buffer and passed to strlen(); if no NUL exists in-bounds, strlen() reads beyond the stack buffer and subsequent concatenation with the WebSocket magic string can write out of bounds. This leads to out-of-bounds read and write on stack memory, resulting in crash (denial of service) and potentially code execution. The path is reachable when CONFIG_HTTP_SERVER_WEBSOCKET is enabled.48d