CyberSecBulletin

Integer Underflow (Wrap or Wraparound)

CWE-191

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.

This can happen in signed and unsigned cases.

We track 250 vulnerabilities of this type. 100% are rated high or critical, and the average CVSS score is 8.0. 3 have been exploited in real attacks.

Latest Integer Underflow (Wrap or Wraparound) vulnerabilities

  • 7.5 High severity

    Linux: Integer Underflow (Wrap or Wraparound)

    CVE-2026-31662Linux

    In the Linux kernel, the following vulnerability has been resolved: tipc: fix bc_ackers underflow on duplicate GRP_ACK_MSG The GRP_ACK_MSG handler in tipc_group_proto_rcv() currently decrements bc_ackers on every inbound group ACK, even when the same member ha

  • 7.8 High severity

    Linux: Integer Underflow (Wrap or Wraparound)

    CVE-2026-31656Linux

    In the Linux kernel, the following vulnerability has been resolved: drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat A use-after-free / refcount underflow is possible when the heartbeat worker and intel_engine_park_heartbeat() race to release

  • 7.8 High severity

    Red Hat Enterprise Linux 10: Integer Underflow (Wrap or Wraparound)

    CVE-2026-33999Red Hat

    A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violati

  • 8.2 High severity

    nimiq-account: Integer Underflow (Wrap or Wraparound)

    CVE-2026-34064Nimiq

    nimiq-account contains account primitives to be used in Nimiq's Rust implementation. Prior to version 1.3.0, `VestingContract::can_change_balance` returns `AccountError::InsufficientFunds` when `new_balance < min_cap`, but it constructs the error using `balanc

  • 9.1 Critical severity

    miniupnpd: Out-of-bounds Read

    CVE-2026-5720Miniupnp Project

    miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of

  • 7.8 High severity

    Adobe Framemaker: Integer Underflow (Wrap or Wraparound)

    CVE-2026-27297Adobe

    Adobe Framemaker versions 2022.8 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that

  • 7.8 High severity

    Adobe Framemaker: Integer Underflow (Wrap or Wraparound)

    CVE-2026-27296Adobe

    Adobe Framemaker versions 2022.8 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that

  • 7.5 High severity

    Linux: Integer Underflow (Wrap or Wraparound)

    CVE-2026-31417Linux

    In the Linux kernel, the following vulnerability has been resolved: net/x25: Fix overflow when accumulating packets Add a check to ensure that `x25_sock.fraglen` does not overflow. The `fraglen` also needs to be resetted when purging `fragment_queue` in `x25_c

  • 7.1 High severity

    libexif: Integer Underflow (Wrap or Wraparound)

    CVE-2026-40386Libexif Project

    In libexif through 0.6.25, an integer underflow in size checking for Fuji and Olympus MakerNote decoding could be used by attackers to crash or leak information out of libexif-using programs.

  • 8.1 High severity

    wolfSSL: Integer Underflow (Wrap or Wraparound)

    CVE-2026-5188wolfSSL

    An integer underflow issue exists in wolfSSL when parsing the Subject Alternative Name (SAN) extension of X.509 certificates. A malformed certificate can specify an entry length larger than the enclosing sequence, causing the internal length counter to wrap du

  • 7.5 High severity

    core-rs-albatross: Integer Underflow (Wrap or Wraparound)

    CVE-2026-33184Nimiq

    nimiq/core-rs-albatross is a Rust implementation of the Nimiq Proof-of-Stake protocol based on the Albatross consensus algorithm. Prior to version 1.3.0, the discovery handler accepts a peer-controlled limit during handshake and stores it unchanged. The immedi

  • 7.5 High severity

    strongSwan: Integer Underflow (Wrap or Wraparound)

    CVE-2026-25075strongSwanEPSS 1.07%

    strongSwan versions 4.5.0 prior to 6.0.5 contain an integer underflow vulnerability in the EAP-TTLS AVP parser that allows unauthenticated remote attackers to cause a denial of service by sending crafted AVP data with invalid length fields during IKEv2 authent

  • 9.1 Critical severity

    Red Hat Enterprise Linux 10: Integer Underflow (Wrap or Wraparound)

    CVE-2026-2369Red Hat

    A flaw was found in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a buffer overread. This can allow an attacker to potentially access sensitive information or cause an application level denia

  • 7.2 High severity

    wazuh: Stack-based Buffer Overflow

    CVE-2026-25772Wazuh

    Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 4.4.0 and prior to version 4.14.3, a stack-based buffer overflow vulnerability exists in the Wazuh Database synchronization module (`wdb_delta_eve

  • 7.8 High severity

    GStreamer: Integer Underflow (Wrap or Wraparound)

    CVE-2026-3084GStreamer

    GStreamer H.266 Codec Parser Integer Underflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerabi

  • 7.8 High severity

    libexif: Integer Underflow (Wrap or Wraparound)

    CVE-2026-32775Libexif Project

    libexif through 0.6.25 has a flaw in decoding MakerNotes. If the exif_mnote_data_get_value function gets passed in a 0 size, the passed in-buffer would be overwritten due to an integer underflow.

  • 9.8 Critical severity

    FreeRDP: Heap-based Buffer Overflow

    CVE-2026-31883FreeRDP

    FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-

  • 7.5 High severity

    lexbor: Integer Underflow (Wrap or Wraparound)

    CVE-2026-29078Lexbor

    Lexbor is a web browser engine library. Prior to 2.7.0, the ISO‑2022‑JP encoder in Lexbor fails to reset the temporary size variable between iterations. The statement ctx->buffer_used -= size with a stale size = 3 causes an integer underflow that wraps to SIZE

  • 8.8 High severity

    Chrome: Integer Underflow (Wrap or Wraparound)

    CVE-2026-3538Google

    Integer overflow in Skia in Google Chrome prior to 145.0.7632.159 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page. (Chromium security severity: Critical)

  • 7.5 High severity

    exiv2: Out-of-bounds Read

    CVE-2026-27596Exiv2

    Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. Prior to version 0.28.8, an out-of-bounds read was found in Exiv2. The vulnerability is in the preview component, which is only triggere

  • 8.1 High severity

    pgvector: Integer Underflow (Wrap or Wraparound)

    CVE-2026-3172Pgvector

    Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server.

  • 8.2 High severity

    Vnet/IP Interface Package: Integer Underflow (Wrap or Wraparound)

    CVE-2025-1924Yokogawa Electric

    A vulnerability has been found in Vnet/IP Interface Package provided by Yokogawa Electric Corporation. If affected product receive maliciously crafted packets, a DoS attack may cause Vnet/IP communication functions to stop or arbitrary programs to be executed.

  • 8.0 High severity

    esp-idf: Integer Underflow (Wrap or Wraparound)

    CVE-2026-25532Espressif

    ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a vulnerability exists in the WPS (Wi-Fi Protected Setup) Enrollee implementation where malformed EAP-WSC packets with truncated payload

  • 8.1 High severity

    strongSwan: Integer Underflow (Wrap or Wraparound)

    CVE-2025-62291strongSwan

    In the eap-mschapv2 plugin (client-side) in strongSwan before 6.0.3, a malicious EAP-MSCHAPv2 server can send a crafted message of size 6 through 8, and cause an integer underflow that potentially results in a heap-based buffer overflow.

  • 7.1 High severity

    iccDEV: Out-of-bounds Read

    CVE-2026-21489InternationalColorConsortium

    iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1.1 and below have Out-of-bounds Read and Integer Underflow (Wrap or Wraparound) vulnerabilities in its CIccCalculatorFunc::SequenceNeedTempReset function

  • 7.5 High severity

    Red Hat Enterprise Linux 10: Integer Underflow (Wrap or Wraparound)

    CVE-2025-67269Red Hat

    An integer underflow vulnerability exists in the `nextstate()` function in `gpsd/packet.c` of gpsd versions prior to commit `ffa1d6f40bca0b035fc7f5e563160ebb67199da7`. When parsing a NAVCOM packet, the payload length is calculated using `lexer->length = (size_

  • 7.5 High severity

    AIS-catcher: Integer Underflow (Wrap or Wraparound)

    CVE-2025-66217Jvde-github

    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

  • 8.2 High severity

    wolfSSL: Integer Underflow (Wrap or Wraparound)

    CVE-2025-11931wolfSSL

    Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wc_XChaCha20Poly1305_Decrypt() which is not used with TLS connections, only from direct calls from an application.

  • 7.5 High severity

    Cbor2: Integer Underflow (Wrap or Wraparound)

    CVE-2025-64076Agronholm

    Multiple vulnerabilities exist in cbor2 through version 5.7.0 in the decode_definite_long_string() function of the C extension decoder (source/decoder.c): (1) Integer Underflow Leading to Out-of-Bounds Read (CWE-191, CWE-125): An incorrect variable reference a

  • 7.8 High severity

    Substance3D - Stager: Integer Underflow (Wrap or Wraparound)

    CVE-2025-61835Adobe

    Substance3D - Stager versions 3.1.5 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in th

  • 7.8 High severity

    Illustrator on iPad: Integer Underflow (Wrap or Wraparound)

    CVE-2025-61836Adobe

    Illustrator on iPad versions 3.0.9 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in tha

  • 7.8 High severity

    Illustrator on iPad: Integer Underflow (Wrap or Wraparound)

    CVE-2025-61826Adobe

    Illustrator on iPad versions 3.0.9 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in tha

  • 8.8 High severity

    QuickJS: Integer Underflow (Wrap or Wraparound)

    CVE-2025-62495QuickJS

    An integer overflow vulnerability exists in the QuickJS regular expression engine (libregexp) due to an inconsistent representation of the bytecode buffer size. * The regular expression bytecode is stored in a DynBuf structure, which correctly uses a $\text{si

  • 8.9 High severity

    Control-M/Agent: Heap-based Buffer Overflow

    CVE-2025-55118BMC

    Memory corruptions can be remotely triggered in the Control-M/Agent when SSL/TLS communication is configured. The issue occurs in the following cases: * Control-M/Agent 9.0.20: SSL/TLS configuration is set to the non-default setting "use_openssl=n"; * Control-

  • 7.5 High severity

    Triton Inference Server: Integer Underflow (Wrap or Wraparound)

    CVE-2025-23335NVIDIA

    NVIDIA Triton Inference Server for Windows and Linux and the Tensor RT backend contain a vulnerability where an attacker could cause an underflow by a specific model configuration and a specific input. A successful exploit of this vulnerability might lead to d

  • 8.2 High severity

    C300 PCNT02: Integer Underflow (Wrap or Wraparound)

    CVE-2025-3947Honeywell

    The Honeywell Experion PKS contains an Integer Underflow vulnerability in the component Control Data Access (CDA). An attacker could potentially exploit this vulnerability, leading to Input Data Manipulation, which could result in improper integer data value c

  • 9.4 Critical severity

    C300 PCNT02: Integer Underflow (Wrap or Wraparound)

    CVE-2025-2523Honeywell

    The Honeywell Experion PKS and OneWireless WDM contains an Integer Underflow vulnerability in the component Control Data Access (CDA). An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which could result

  • 7.8 High severity

    Adobe Framemaker: Integer Underflow (Wrap or Wraparound)

    CVE-2025-47130Adobe

    Adobe Framemaker versions 2020.8, 2022.6 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction

  • 7.8 High severity

    Adobe Framemaker: Integer Underflow (Wrap or Wraparound)

    CVE-2025-47128Adobe

    Adobe Framemaker versions 2020.8, 2022.6 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction

  • 7.8 High severity

    InCopy: Integer Underflow (Wrap or Wraparound)

    CVE-2025-47097Adobe

    InCopy versions 20.3, 19.5.3 and earlier are affected by an Integer Underflow (Wrap or Wraparound) vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a vi