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
279 results · Clear filters · Feed
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High 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
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High 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
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High 8.8
Windows Storage Spaces Controller Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Windows Storage Spaces Controller allows an unauthorized attacker to execute code over a network.
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High 8.8
Microsoft Office Word Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
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High 8.8
Microsoft Office Outlook Remote Code Execution Vulnerability
Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
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High 7.5
Microsoft QUIC Denial of Service Vulnerability
Integer underflow (wrap or wraparound) in Microsoft QUIC allows an unauthorized attacker to deny service over a network.
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High 7.0
Windows exFAT File System Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows exFAT File System allows an authorized attacker to elevate privileges locally.
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High 8.8
Windows Bluetooth Port Driver Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges over a network.
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High 7.8
Windows Kernel Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows Kernel allows an authorized attacker to elevate privileges locally.
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High 8.8
HID Parser Library Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in HID Parser Library allows an authorized attacker to elevate privileges over a network.
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High 8.8
HEVC Video Extensions Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
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High 7.5
Ettercap through 0.8.4.1 Stack Buffer Overflow via WPA CCMP Decryption
Ettercap through 0.8.4.1 contains an integer underflow in ccmp_decrypt() in src/ec_encryption_ccmp.c that subtracts the 8-byte CCMP trailer without checking minimum length. Attackers on a network whose WPA key is loaded can send a short crafted CCMP frame to …
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High 7.5
Hickory DNS from 0.26.0 before 0.26.2 Panic via TSIG RDATA Decoding
Hickory DNS from 0.26.0 before 0.26.2 contains an integer underflow vulnerability in TSIG RDATA decoding that allows remote attackers to trigger a panic via malformed records. Attackers can send a crafted TSIG record in DNS wire format to cause unchecked subt…
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High 8.2
FreeSWITCH: Pre-authentication heap buffer overflow in core XML empty-entity decoding
FreeSWITCH is an open-source software telecommunications platform. Before version 1.11.2, an integer underflow in switch_xml_decode() can cause an undersized heap allocation when an XML document declares an entity with an empty replacement value. Subsequent…
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High 7.5
FreeSWITCH: Pre-authentication out-of-bounds write in MSRP message body parsing
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, msrp_parse_buffer() subtracted delimiter framing from a pee…
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High 7.5
FreeSWITCH: Out-of-bounds read in mod_rtmp H.264 video message parsing
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, rtmp_rtmp2rtpH264() trusted the length prefix of each inbou…
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High 7.5
FreeSWITCH: Stack buffer overflow parsing the SDP a=crypto key material on inbound calls
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, switch_core_media_add_crypto() passed the encoded key and s…
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High 7.5
Kore before 4.3.0 Integer Underflow Memory Exhaustion via http_header_recv()
Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body handling that allows unauthenticated attackers to bypass http_body_max by sending more body bytes than declared. Attackers can send oversized first segments over many concurren…
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High 7.5
psqlODBC row cache overflow when a later FETCH changes the column count
psqlODBC sizes its row cache from the column count of a cursor's first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more col…
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High 7.5
An integer underflow vulnerability in the NAS decoder of OpenAirInterface (OAI) CN5G AMF v2.2.1 allows an unauthenticat…
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High 7.1
Integer underflow leads to out-of-bounds read in pf_cpm_c_data_ind()
P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). When handling a received cyclic data frame while the consumer is in the FRUN or RUN state, the offset of the APDU status was computed as the frame length minus 4 using 16-bit arithmetic,…
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High 7.1
Session Smart Router: A malicious DHCP server causes information disclosure and a service crash during DHCP option parsing
An Integer Underflow vulnerability in DhcpMessageDecoder in Juniper Networks Session Smart Router allows an attacker with local network access to cause information disclosure and a denial of service via a malicious DHCP reply.
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High 7.5
An integer underflow was addressed with improved input validation. This issue is fixed in iOS 26.7.2 and iPadOS 26.7.2,…
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High 7.1
Multiple Out-of-Bounds Reads in Frame Processing
SOEM version 2.0.0 and earlier contains multiple vulnerabilities in frame processing where a malicious device can cause the master to read data outside allocated buffers. The software uses length and offset values from device messages without validating them …
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High 8.3
Memory Corruption via Integer Underflow in Message Length Validation
SOEM version 2.0.0 and earlier contains vulnerabilities where a malicious device on the network can send specially crafted messages that cause the master to write data outside allocated memory boundaries. The software performs arithmetic on message length val…
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High 8.6
Apache Traffic Server: HTTP/2 DATA frame padding underflow lets a client trigger backend worker-pool exhaustion
Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a malformed padded HTTP/2 DATA frame. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0. Users a…
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High 7.5
Apache bRPC: Integer Underflow in mcpack2pb Parser Leading to Denial of Service
An integer underflow in the mcpack2pb component of Apache bRPC (version < 1.18.0) on all platforms allows remote attackers to crash a bRPC server by sending a request containing a string field with a zero value_size. The UnparsedValue::as_string() function co…
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High 7.5
Apache bRPC: Integer Underflow and Out-of-Bounds Read in HTTP/2 DATA Frame Parser
Integer underflow and out-of-bounds read in the HTTP/2 server DATA frame parser in Apache bRPC allows an unauthenticated remote attacker to cause denial of service by sending a malformed DATA frame with the PADDED flag set and a zero-length payload. Root Caus…
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High 8.7
JITServer: Pre-authentication remote crash via integer underflow and out-of-bounds heap read in DataDescriptor deserialization
In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component fails to perform cross-field validation on attacker-controlled `_size`, `_paddingSize`, and `_dataOffset` fields during `DataDescriptor` message deserialization. An unauthenticated remote att…
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High 8.7
Out-of-bounds Read via a Zero-length TLS 1.3 Certificate Message in NetX Secure
The TLS 1.3 Certificate-message parser in NetX Secure decrements the message length to skip a context byte without first establishing that the message has a byte to skip. A zero-length Certificate message therefore wraps the unsigned length to `0xFFFFFFFF`, w…
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High 7.6
FreeRDP 3.14.1 before 3.32.0 Integer Underflow in BMP Writer via Clipboard
FreeRDP from 3.14.1 before 3.32.0 contains an integer underflow in the WinPR BMP writer, where a mismatched stride calculation passes SIZE_MAX - 3 to Stream_Zero for sub-byte images. A malicious RDP clipboard peer can return a crafted 1-bpp BMP processed by c…
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High 7.5
libIEC61850: Remote information disclosure in MMS file service via out-of-range initialPosition in fileOpen followed by fileRead
libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, the MMS file service in src/mms/iso_mms/server/mms_file_service.c accepts an out-of-range initialPositio…
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High 7.5
Mongoose: Unauthenticated remote heap out-of-bounds read in built-in TLS: off-by-one length check in mg_tls_recv_record() underflows recv_len to SIZE_MAX
Mongoose is an embedded web server and network library. Prior to 7.23, the built-in TLS stack selected by MG_TLS_BUILTIN in src/tls_builtin.c accepts a TLS 1.3 record whose decrypted size is exactly the 16-byte authentication tag with no plaintext or ContentT…
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High 8.7
Out-of-bounds read via an empty signature BIT STRING in NetX Secure X.509 parsing
In Eclipse ThreadX NetX Duo versions up to and including 6.5.2.202603, the NetX Secure X.509 parser accepts a certificate whose signature is an empty BIT STRING and records a signature length of 0xFFFFFFFF. A remote peer can present such a certificate during …
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High 7.1
An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated ser…
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High 7.5
Windows Failover Cluster Denial of Service Vulnerability
Integer underflow (wrap or wraparound) in Windows Failover Cluster allows an unauthorized attacker to deny service over a network.
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High 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
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High 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
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High 8.0
Microsoft Bluetooth Driver Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Bluetooth Driver allows an authorized attacker to elevate privileges over an adjacent network.
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High 7.0
Windows Installer Elevation of Privilege Vulnerability
Integer underflow (wrap or wraparound) in Windows Installer allows an authorized attacker to elevate privileges locally.