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

  • 8.7 High severity

    Apache Thrift: Integer Underflow (Wrap or Wraparound)

    CVE-2026-86537Apache

    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

  • 8.2 High severity

    Apache Thrift: Integer Underflow (Wrap or Wraparound)

    CVE-2026-82459Apache

    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.

  • 7.8 High severity

    GeForce: Integer Underflow (Wrap or Wraparound)

    CVE-2026-47585NVIDIA

    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, inform

  • 7.8 High severity

    GeForce: Integer Underflow (Wrap or Wraparound)

    CVE-2026-47540NVIDIA

    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 priv

  • 7.5 High severity

    Fireware OS: Integer Underflow (Wrap or Wraparound)

    CVE-2026-86133WatchGuard

    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

  • 7.5 High severity

    Fireware OS: Integer Underflow (Wrap or Wraparound)

    CVE-2026-86132WatchGuard

    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.

  • 7.1 High severity

    Eclipse ThreadX NetX Duo: Out-of-bounds Read

    CVE-2026-102714Eclipse Foundation

    In Eclipse ThreadX NetX Duo versions up to and including 6.5.2.202603, built with IPv6, the ICMPv6 option validator accepts an option area that ends in a one- or two-byte residue, and the Router Advertisement, Neighbor Solicitation, Neighbor Advertisement and

  • 7.5 High severity

    webpki: Integer Underflow (Wrap or Wraparound)

    CVE-2026-93599Rustls

    rustls-webpki through 0.103.12 (and 0.104.0-alpha releases before 0.104.0-alpha.7) contains a reachable panic in bit_string_flags() in src/der.rs. The input guard fails to reject a named-bit BIT STRING whose content is exactly [0x00] (zero padding bits and no

  • 9.8 Critical severity

    HP Linux Imaging and Printing Software (HPLIP): Integer Underflow (Wrap or Wraparound)

    CVE-2026-91103HP

    HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several software components that could potentially enable remote code execution, privilege escalation, denial of service, information disclosure, or

  • 7.5 High severity

    RouterOS: Heap-based Buffer Overflow

    CVE-2026-89028MikroTik

    MikroTik RouterOS before 7.24 contains a heap memory corruption vulnerability in the userspace SMB daemon that allows remote attackers to corrupt adjacent heap memory by supplying a crafted uniPwdLen value in the SMB1 SessionSetupAndX handler. An attacker can

  • 7.5 High severity

    FreeRDP: Integer Underflow (Wrap or Wraparound)

    CVE-2026-91948FreeRDP

    FreeRDP versions before 3.31.0 contain an out-of-bounds write vulnerability in server-side static virtual channel handling when CHANNEL_OPTION_SHOW_PROTOCOL is enabled. Authenticated clients can queue oversized channel messages that cause buffer underflow and

  • 7.0 High severity

    Windows 10 Version 1607: Integer Underflow (Wrap or Wraparound)

    CVE-2026-69859Microsoft

    Time-of-check time-of-use (toctou) race condition in Windows USB Audio Class driver (usbaudio.sys) allows an authorized attacker to elevate privileges locally.

  • 7.7 High severity

    SAP NetWeaver Application Server for ABAP and…: Integer Underflow (Wrap or Wraparound)

    CVE-2026-66767SAP

    SAP NetWeaver Application Server for ABAP and ABAP Platform allows an unauthenticated user to send a specially crafted packet that triggers reprocessing of a previously buffered user request, potentially hijacking another user's session under narrow timing con

  • 7.5 High severity

    Red Hat Directory Server 11.5 E4S for RHEL 8: Integer Underflow (Wrap or Wraparound)

    CVE-2026-18355Red Hat

    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 en

  • 7.5 High severity

    essential-moos: Integer Underflow (Wrap or Wraparound)

    CVE-2026-85436ThemoosEPSS 2.08%

    MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray() that allows remote attackers to corrupt heap memory by sending UDP datagrams with negative declared lengths. Attackers can send crafted UDP packets

  • 8.7 High severity

    RSLinx Classic®: Integer Underflow (Wrap or Wraparound)

    CVE-2026-9624Rockwell Automation

    A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet can cause the RSLinx® Classic service to crash due to insufficient data length validation, requiring a restart of the service to recover.

  • 8.7 High severity

    RSLinx Classic®: Integer Underflow (Wrap or Wraparound)

    CVE-2026-9622Rockwell Automation

    A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet targeting the Forward Close service can cause the RSLinx® Classic service to crash, requiring a restart of the service to recover.

  • 7.4 High severity

    A security flaw has been discovered in NASA cFS up to 7.0.1.

    CVE-2026-82480Nasa

    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 Tot

  • 9.6 Critical severity

    klever-go: Integer Underflow (Wrap or Wraparound)

    CVE-2026-54754Klever-io

    Klever-Go is the Go implementation of the Klever blockchain protocol. Prior to 1.7.19, marketplace settlement in core/kapp/market/market.go reads MarketOrderData.ReferralPercentage from the listing while reading asset.Royalties.MarketPercentage live at purchas

  • 8.7 High severity

    Fireware OS: Integer Underflow (Wrap or Wraparound)

    CVE-2026-78011WatchGuard

    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.

  • 9.3 Critical severity

    Fireware OS: Stack-based Buffer Overflow

    CVE-2026-19318WatchGuard

    A stack-based buffer overflow vulnerability in the WatchGuard Fireware OS iked process allows a remote unauthenticated attacker to execute arbitrary code by sending specially crafted network traffic.

  • 8.7 High severity

    Fireware OS: Out-of-bounds Read

    CVE-2026-19317WatchGuard

    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.

  • 8.7 High severity

    Fireware OS: Integer Underflow (Wrap or Wraparound)

    CVE-2026-19314WatchGuard

    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.

  • 7.5 High severity

    NSD: Integer Underflow (Wrap or Wraparound)

    CVE-2026-18916NLnet Labs

    Any remote client can crash a NSD serve child, by throttling the TCP receive window after a TCP query. By continuously crashing the serve childs, the remote client can denial all TCP service to this NSD instance.

  • 7.5 High severity

    C2PA Tool: Integer Underflow (Wrap or Wraparound)

    CVE-2026-71442Adobe

    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 conditio

  • 9.1 Critical severity

    AIX: Integer Underflow (Wrap or Wraparound)

    CVE-2026-18670IBM

    IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service and potentially disclose sensitive information due to an integer underflow.

  • 7.5 High severity

    AIX: Incorrect Calculation of Buffer Size

    CVE-2026-16924IBM

    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.

  • 7.8 High severity

    FreeBSD: Out-of-bounds Read

    CVE-2026-58087FreeBSD

    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

  • 7.5 High severity

    netatalk: Integer Underflow (Wrap or Wraparound)

    CVE-2026-45698Netatalk

    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 of

  • 8.8 High severity

    Linux: Integer Underflow (Wrap or Wraparound)

    CVE-2026-72003Linux

    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 of

  • 7.5 High severity

    netatalk: Integer Underflow (Wrap or Wraparound)

    CVE-2026-45699Netatalk

    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 t

  • 7.1 High severity

    MongoDB Server: Integer Underflow (Wrap or Wraparound)

    CVE-2026-18687MongoDB

    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 spe

  • 7.8 High severity

    Windows 10 Version 1607: Integer Underflow (Wrap or Wraparound)

    CVE-2026-62696Microsoft

    Integer underflow (wrap or wraparound) in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.

  • 9.8 Critical severity

    Linux: Integer Underflow (Wrap or Wraparound)

    CVE-2026-68123Linux

    In the Linux kernel, the following vulnerability has been resolved: openvswitch: fix GSO userspace truncation underflow OVS_ACTION_ATTR_TRUNC currently stores a delta from the original skb length in OVS_CB(skb)->cutlen. When a later userspace action segments a

  • 9.9 Critical severity

    Red Hat Enterprise Linux 9: Integer Underflow (Wrap or Wraparound)

    CVE-2026-59090Red Hat

    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 i

  • 7.8 High severity

    llama.cpp: Out-of-bounds Read

    CVE-2026-43628Ggml-org

    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

  • 7.5 High severity

    raster: Integer Underflow (Wrap or Wraparound)

    CVE-2026-71202Kosinix

    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.

  • 7.5 High severity

    FreeRDP: Integer Underflow (Wrap or Wraparound)

    CVE-2026-67298FreeRDP

    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 th

  • 8.1 High severity

    MaxiCharger AC Elite Home: Integer Underflow (Wrap or Wraparound)

    CVE-2026-13308Autel

    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 n

  • 7.5 High severity

    gopacket: Integer Underflow (Wrap or Wraparound)

    CVE-2026-54345Gopacket

    gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is