Vulnerabilities (CVE)

Filtered by CWE-191
Total 661 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2026-83742 1 Wolfssh 1 Wolfssh 2026-10-13 N/A 8.8 HIGH
Unsigned integer underflow in wstrncat() in src/port.c in wolfSSL wolfSSH from v1.4.11 through v1.5.0 on non-Windows platforms allows an authenticated remote attacker to write one out-of-bounds null byte past the end of a stack buffer by sending a crafted SFTP path. wolfSSH_RealPath() in src/ssh.c appends each path component with a remaining-size bound (outSz - curSz) rather than the full destination size, so once the accumulated path reaches half the output buffer the size_t computation n - strlen(s1) - 1 wraps to near SIZE_MAX. The strncat() call is then effectively unbounded and copies the whole component; when that component exactly fills the remainder of the buffer, its terminating null is written one byte past the end. The caller's own length check keeps the copied data inside the buffer, so the overflow is limited to that single null byte, which may corrupt an adjacent stack value and crash the process. Applications that call the public wolfSSH_RealPath() with an output buffer smaller than the input path are additionally exposed to an unbounded copy, because the word32 expression outSz - segSz in that length check also wraps.
CVE-2026-59090 2 Gimp, Redhat 2 Gimp, Enterprise Linux 2026-10-12 N/A 8.4 HIGH
A flaw was found in GIMP's PSD file format plugin. This vulnerability, an unsigned integer underflow in the `block_rem` variable, occurs when a user opens a specially crafted `.psd` image file. The underflow leads to parser confusion, enabling an attacker to inject arbitrary data as layer resource blocks. This can ultimately result in arbitrary code execution, allowing the attacker to run malicious code on the victim's system.
CVE-2025-55096 1 Eclipse 1 Threadx Usbx 2026-10-09 N/A 6.1 MEDIUM
In USBX before 6.4.3, the USB support module for Eclipse Foundation ThreadX, there was a potential out of bound read issue in _ux_host_class_hid_report_descriptor_get()  when parsing a descriptor of an USB HID device.
CVE-2019-5459 2 Opensuse, Videolan 4 Backports, Backports Sle, Leap and 1 more 2026-10-08 5.8 MEDIUM 7.1 HIGH
An Integer underflow in VLC Media Player versions < 3.0.7 leads to an out-of-band read.
CVE-2019-13602 4 Canonical, Debian, Opensuse and 1 more 5 Ubuntu Linux, Debian Linux, Backports Sle and 2 more 2026-10-08 6.8 MEDIUM 7.8 HIGH
An Integer Underflow in MP4_EIA608_Convert() in modules/demux/mp4/mp4.c in VideoLAN VLC media player through 3.0.7.1 allows remote attackers to cause a denial of service (heap-based buffer overflow and crash) or possibly have unspecified other impact via a crafted .mp4 file.
CVE-2026-107614 2026-10-08 N/A 6.1 MEDIUM
An integer underflow in WinCursorShapeUtils::trimTransparent() in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to crash the server, and potentially read out-of-bounds memory, by causing a cursor shape with a width or height of zero to be processed on the DXGI capture path. The loop bound width - 1 wraps to 0xFFFFFFFF, producing an access roughly 4 GB beyond the 64 KB cursor buffer; a monochrome cursor of height 1 also becomes 0 because getCursorHeight() halves the height in place.
CVE-2026-106429 2026-10-08 N/A 6.5 MEDIUM
An integer underflow in the KMS endpoint-parsing logic of MongoDB libmongocrypt can cause an allocation failure that terminates the application process. This can occur when an authenticated user modifies a key document in the key vault collection, or when an application accepts a KMS endpoint containing a colon after its path or query during key creation. The issue does not access memory outside its allocated bounds.
CVE-2026-18839 2026-10-08 N/A 2.2 LOW
An integer underflow was found in the popt library when formatting help text for option tables that exceed the terminal width. A local user who can cause an application to print help under those conditions may cause that application to crash or fail to display help, resulting in a denial of service of the affected application.
CVE-2026-18355 2026-10-08 N/A 7.5 HIGH
A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). In sasl_io_start_packet(), the wrapped-record length read from the wire is validated only against an upper bound. A small wire length (0, 1, or 2) produces an encrypted_buffer_count below the already-consumed encrypted_buffer_offset, causing an unsigned subtraction underflow in sasl_io_read_packet(). PR_Recv is then requested to read approximately 4 GiB into a 1024-byte heap buffer, resulting in a heap buffer overflow with attacker-controlled content. After a successful SASL bind with integrity protection (SSF > 0), a remote authenticated attacker can cause a denial of service or potentially achieve remote code execution. This flaw is distinct from CVE-2026-11774, whose fix only guards against upper-bound overflow.
CVE-2025-66217 1 Aiscatcher 1 Ais-catcher 2026-10-07 N/A 7.5 HIGH
AIS-catcher is a multi-platform AIS receiver. Prior to version 0.64, an integer underflow vulnerability exists in the MQTT parsing logic of AIS-catcher. This vulnerability allows an attacker to trigger a massive Heap Buffer Overflow by sending a malformed MQTT packet with a manipulated Topic Length field. This leads to an immediate Denial of Service (DoS) and, when used as a library, severe Memory Corruption that can be leveraged for Remote Code Execution (RCE). This issue has been patched in version 0.64.
CVE-2026-90996 2 Fedoraproject, Redhat 3 Sssd, Enterprise Linux, Openshift Container Platform 2026-10-07 N/A 4.0 MEDIUM
A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.
CVE-2026-102168 2026-10-07 N/A 6.5 MEDIUM
On affected Arista Wi-Fi access points with Captive Portal enabled, an unauthenticated wireless client connected to a Captive-Portal-enabled SSID can crash the portal service with a crafted HTTP request. This results in a temporary denial of service until the service automatically restarts. Remote code execution is not possible.
CVE-2026-86132 1 Watchguard 1 Fireware 2026-10-06 N/A 7.5 HIGH
An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon (iked) allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite.
CVE-2026-86133 1 Watchguard 1 Fireware 2026-10-06 N/A 7.5 HIGH
An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon (iked) allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service.
CVE-2026-84411 2026-10-06 N/A 9.8 CRITICAL
The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body handling that is reachable before authentication. This can be leveraged by an unauthenticated network attacker to achieve arbitrary code execution as root, or to cause a denial of service, using a single crafted request.
CVE-2026-82459 2026-10-02 N/A N/A
Integer underflow (wrap or wraparound), Out-of-bounds write vulnerability in Apache Thrift C++ 32 bit THeaderTransport. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
CVE-2026-86537 2026-10-02 N/A N/A
Uncaught exception, Loop with unreachable exit condition ('infinite loop'), Integer underflow (wrap or wraparound) vulnerability in Apache Thrift D language bindings. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
CVE-2026-47585 2026-10-01 N/A 7.8 HIGH
NVIDIA GPU Display Driver for Windows contains a vulnerability in the kernel module where an attacker could cause an integer underflow. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.
CVE-2026-47540 2026-10-01 N/A 7.8 HIGH
NVIDIA GPU Display Driver for Windows and Linux contains a vulnerability in the kernel mode layer where an attacker could cause an integer underflow. A successful exploit of this vulnerability might lead to code execution, denial of service, escalation of privileges, information disclosure, and data tampering.
CVE-2026-69276 1 Microsoft 13 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 10 more 2026-09-30 N/A 9.8 CRITICAL
Integer underflow (wrap or wraparound) in Microsoft UxTheme Library (uxtheme.dll) allows an unauthorized attacker to execute code over a network.