CVE WatchSep 24, 2026

CVE-2025-24993

Microsoft Windows NTFS Heap-Based Buffer Overflow Vulnerability

CVSS

7.8

High

EPSS

2.2%

p82

KEV

YES

Mar 11, 2025

Exploit Today

0-100

Published: Mar 11, 2025 · Last modified: Sep 24, 2026 · CWE-122

EPSS · 30d

2.2%EPSS · 30 days2.2%

2026-09-162026-10-14

KEV catalog record

Product

Microsoft / Windows

Vulnerability

Microsoft Windows NTFS Heap-Based Buffer Overflow Vulnerability

Added to KEV

Mar 11, 2025

Remediate by

Apr 1, 2025

Known ransomware use

Summary description

Microsoft Windows New Technology File System (NTFS) contains a heap-based buffer overflow vulnerability that allows an unauthorized attacker to execute code locally.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-24993 ; https://nvd.nist.gov/vuln/detail/CVE-2025-24993

Technical description

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2026-552467.8 HIG

—

———bincookie is a header-only binarycookies parser. Prior to 0.1.9, bincookie_init_file() in bincookie.h allocates a buffer using the actual .binarycookies file length but trusts the file-controlled num_pages field as the loop bound for byte-swapping page_sizes entries. A crafted file can make the loop read and write beyond the heap allocation, and related unvalidated page sizes and cookie_offsets can drive additional out-of-bounds accesses in page and cookie iteration. Applications that parse an attacker-supplied binarycookies file may crash or suffer heap corruption that can potentially enable code execution. This issue is fixed in version 0.1.9.5h CVE-2026-11095810.0 CRI

—

———A vulnerability was found in Wavlink WN530HG4B M30HG4B_V260724. The impacted element is an unknown function of the file api.cgi. The manipulation results in heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to resolve this issue. The affected component should be upgraded. The vendor confirms: "We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked."4h CVE-2026-798316.6 MED

—

———A heap buffer overflow in HPE NonStop Posix User Threads may allow arbitrary code execution.7h CVE-2026-798287.1 HIG

—

———A heap buffer overflow in HPE NonStop Debug Utilities could corrupt resume-execution address and may potentially redirect execution flow.7h CVE-2026-798277.1 HIG

—

———A heap buffer overflow in HPE NonStop Inspect Subsystem could corrupt resume-execution address and may potentially redirect execution flow.7h CVE-2026-798267.1 HIG

—

———A heap buffer overflow in HPE NonStop OCAX could corrupt address space and may potentially redirect execution flow.7h