Weakness (CWE)
CWE-191: Integer Underflow (Wrap or Wraparound)
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
More detail
This can happen in signed and unsigned cases.
Source: MITRE CWE-191
280 results · Clear filters · Feed
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High 7.4
NASA cFS cFE Software Bus cfe_sb_util.c CFE_SB_GetUserDataLength integer underflow
A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFE_SB_GetUserDataLength of the file src/cFS/cfe/modules/sb/fsw/src/cfe_sb_util.c of the component cFE Software Bus. Performing a manipulation of the argument To…
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High 8.7
Fireware OS Pre-Authentication Out-of-Bounds Read in iked Allows Denial of Service (DoS)
An out-of-bounds read vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
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High 8.7
Fireware OS Integer Underflow in iked Allows Unauthenticated Denial of Service (DoS)
An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
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High 8.7
Fireware OS Integer Underflow in Iked Allows Unauthenticated Denial of Service (DoS)
An integer underflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to create a Denial of Service (DoS) condition in VPN processing by sending specially crafted network traffic.
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High 7.5
CAI Content Credentials | Integer Underflow (Wrap or Wraparound) (CWE-191)
CAI Content Credentials is affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service conditi…
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High 7.5
Vulnerabilities in IBM AIX and PowerVM VIOS
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to an improper calculation of a memory offset during IPsec decapsulation.
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High 7.8
Heap out-of-bounds access in semctl(2)
The GETALL and SETALL commands in semctl(2) recorded the number of semaphores in the target set, dropped the lock protecting the set, allocated a buffer sized for that count, and reacquired the lock. A sequence-number check was used to verify that the set had…
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High 7.5
Netatalk has Integer Underflow → Stack Buffer Overflow in deletedir()
Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 through 4.4.2, a stack-based buffer overflow exists in the deletedir() function of Netatalk's afpd daemon due to an integer underflow in the calculation o…
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High 8.8
wifi: brcmfmac: cyw: fix heap overflow on a short auth frame
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: cyw: fix heap overflow on a short auth frame brcmf_notify_auth_frame_rx() takes the frame length from the firmware event and copies the frame body with the management header o…
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High 7.5
Netatalk has Integer Underflow → Stack Buffer Overflow in copydir()
Netatalk is a Free and Open Source file server suite for Unix-like operating systems. In versions 3.1.19 through 4.4.2, a stack-based buffer overflow exists in the copydir() function of Netatalk's afpd daemon due to an integer underflow in the calculation of …
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High 7.1
Improper Validation in MongoDB Queryable Encryption Maintenance Operation Leads to Denial of Service and Index Corruption
MongoDB Server's handling of a Queryable Encryption maintenance operation did not properly validate certain request parameters against the collection's encrypted field configuration before use. An authenticated user with readWrite privileges could submit a sp…
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High 7.8
Microsoft Office Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally.
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High 7.8
Windows HTTP.sys Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
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High 7.8
Microsoft Office Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to execute code locally.
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High 7.8
Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
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High 8.4
Gimp: gimp: arbitrary code execution in psd plugin due to unsigned underflow
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 …
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High 7.8
llama.cpp b3978–b9058 Integer Underflow via DRY Sampler
llama.cpp builds b3978 through b9058 contain an integer underflow and out-of-bounds read vulnerability in the DRY sampler that allows unauthenticated attackers to trigger a heap buffer underflow by sending a crafted HTTP request with dry_allowed_length set to…
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High 7.5
raster - Integer Underflow in crop() Offset Handling Causes Capacity-Overflow Panic
The raster Rust crate's crop function (src/editor.rs) clamps the crop width/height against source dimensions but only clamps the offset_x/offset_y parameters against 0, never against the source width/height.
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High 7.5
FreeRDP 3.28.0 Heap Buffer Overflow via RAIL orderLength Underflow
FreeRDP versions 3.28.0 and earlier contain a heap buffer overflow in the server-side RAIL channel handler (rail_server_handle_messages() in channels/rail/server/rail_main.c). When processing a RAIL PDU header, the code subtracts RAIL_PDU_HEADER_LENGTH from t…
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High 8.1
Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability
Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Elite Home EV chargers. Authentication is …
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High 8.2
BEAM VM crash via integer underflow in binary_to_term BIT_BINARY_EXT decoding
Integer Underflow (Wrap or Wraparound) vulnerability in erlang otp erlang/otp (erts modules), erlang otp erts (erts modules) allows Forced Integer Overflow, Excessive Allocation. This vulnerability is associated with program files erts/emulator/beam/external.…
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High 7.5
libssh2 Integer Underflow DoS via AES-GCM Cipher Negotiation
libssh2 through 1.11.1, fixed in commit a2ed82d, contains a pre-authentication integer underflow vulnerability in the ssh2_cipher_crypt() function in src/openssl.c that allows a malicious SSH server to crash any connecting client by negotiating AES-GCM cipher…
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High 8.8
Apache NimBLE: Incorrect data validation in BASS add/modify source operation
Out-of-bounds Write, Integer Underflow (Wrap or Wraparound) vulnerability in Apache NimBLE BASS service. Improper validation when parsing BASS service "Add Source" and "Modify Source" operation PDU could results in stack buffer overflow or arbitrary out-of-b…
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High 7.8
FFmpeg 8.1.2 Out-of-Bounds Write via TY Demuxer and Shorten Decoder
FFmpeg through 8.1.2 contains an out-of-bounds write vulnerability that allows attackers to cause heap corruption by supplying a crafted ffconcat file processed with the -safe 0 flag. The TY demuxer's demux_audio() function decrements packet size without boun…
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High 7.1
libheif: heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow
libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.19.0 through 1.21.2 have a heap OOB read in ImageItem_Grid::decode_grid_tile via irot-induced tile-coordinate underflow. Version 1.22.0 fixes the issue.
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High 7.8
xfrm: Check for underflow in xfrm_state_mtu
In the Linux kernel, the following vulnerability has been resolved: xfrm: Check for underflow in xfrm_state_mtu Leo Lin reported OOB write issue in esp component: xfrm_state_mtu() returns u32 but performs its arithmetic in unsigned modulo-2^32 space using an …
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High 7.8
Microsoft Excel Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
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High 7.8
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Out-of-bounds read in Windows Universal Disk Format File System Driver (UDFS) allows an unauthorized attacker to elevate privileges locally.
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High 7.8
Windows NTFS Remote Code Execution Vulnerability
Out-of-bounds read in Windows NTFS allows an unauthorized attacker to execute code locally.
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High 7.8
Windows NTFS Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Windows NTFS allows an unauthorized attacker to execute code locally.
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High 7.3
Windows Universal Disk Format File System Driver (UDFS) Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
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High 7.5
Windows DHCP Client Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows DHCP Client allows an unauthorized attacker to elevate privileges over a network.
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High 7.8
Microsoft Defender Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Defender allows an unauthorized attacker to execute code locally.
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High 8.8
Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.
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High 7.5
U-Boot 2026.04-rc3 Integer Underflow DoS via tcp_rx_state_machine()
U-Boot through 2026.04-rc3 contains an integer underflow vulnerability in the tcp_rx_state_machine() function (net/tcp.c) that allows a network-adjacent attacker to crash the bootloader by sending a malformed TCP SYN+ACK packet with a manipulated data offset …
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High 7.5
Glib: integer underflow in gio/gdbusintrospection.c via "g_dbus_node_info_new_for_xml"
A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a `node` element nested within other elements like `method`, `…
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High 7.1
libnfs through 6.0.2 before 935b8db has an xid integer underflow in READ_IOVEC in rpc_read_from_socket in lib/socket.c …
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High 8.8
Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.
Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers. This issue affects Connext Micro: from 4.0.0 before 4.3.0.
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High 8.2
iso14229 Integer Underflow and Out-of-Bounds Read in Handle_0x27_SecurityAccess()
driftregion iso14229 through 0.9.0 contains an integer underflow and downstream out-of-bounds read in the Handle_0x27_SecurityAccess function in iso14229.c that allows a remote unauthenticated attacker to crash a UDS server and potentially read memory past th…
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High 8.2
MQTT-C Heap Out-of-Bounds Read and Integer Underflow in mqtt_unpack_publish_response()
LiamBindle MQTT-C versions prior to 1.1.7 contain a heap-based out-of-bounds read and integer underflow in the mqtt_unpack_publish_response() function in src/mqtt.c. A remote unauthenticated attacker controlling an MQTT broker, or capable of injecting MQTT tr…