CVE-2026-56194
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a network.
CVSS
8.8
High
EPSS
0.9%
p54
KEV
—
Exploit Today
16
0-100
Published: Jul 14, 2026 · Last modified: Jul 15, 2026 · CWE-122 · CWE-190
0.9%EPSS · 30 days0.9%
2026-07-152026-07-16
Heap-based buffer overflow in Windows Network File System allows an authorized attacker to elevate privileges over a network.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-429458.1 HIG99.1%
——30NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.3dCVE-2026-276548.2 HIG97.4%
——29NGINX Open Source and NGINX Plus have a vulnerability in the ngx_http_dav_module module that might allow an attacker to trigger a buffer overflow to the NGINX worker process; this vulnerability may result in termination of the NGINX worker process or modification of source or destination file names outside the document root. This issue affects NGINX Open Source and NGINX Plus when the configuration file uses DAV module MOVE or COPY methods, prefix location (nonregular expression location configuration), and alias directives. The integrity impact is constrained because the NGINX worker process user has low privileges and does not have access to the entire system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.3dCVE-2020-292387.5 HIG96.6%
——29An integer buffer overflow in the Nginx webserver of ExpressVPN Router version 1 allows remote attackers to obtain sensitive information when the server running as reverse proxy via specially crafted request.9dCVE-2026-505189.8 CRI93.7%
——28Heap-based buffer overflow in Windows DHCP Server allows an unauthorized attacker to execute code over a network.2dCVE-2025-510896.5 MED91.4%
——27Tenda AC8V4 V16.03.34.06` was discovered to contain heap overflow at /goform/GetParentControlInfo.The manipulation of the argument `mac` leads to heap-based buffer overflow.13dCVE-2026-92568.1 HIG90.0%
——27NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping Perl-Compatible Regular Expression (PCRE) captures (for example, ^/((.*))$) and a replacement string that references multiple such captures (for example, $1$2) in a redirect or arguments context. An unauthenticated attacker along with conditions beyond their control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.3d