CyberSecBulletin

Stack-based Buffer Overflow

CWE-121

The product writes past the end of a buffer that was allocated on the stack.

We track 2,424 vulnerabilities of this type. 100% are rated high or critical, and the average CVSS score is 8.6. 20 have been exploited in real attacks.

How this weakness is prevented

  • Operation Build and Compilation: Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking. D3-SFCV (Stack Frame Canary Validation) from D3FEND discusses canary-based detection in detail.
  • Architecture and Design: Use an abstraction library to abstract away risky APIs. Not a complete solution.
  • Implementation: Implement and perform bounds checking on input.
  • Implementation: Do not use dangerous functions such as gets. Use safer, equivalent functions which check for boundary errors.

Latest Stack-based Buffer Overflow vulnerabilities

  • 9.8 Critical severity

    Ac7 Firmware: Stack-based Buffer Overflow

    CVE-2026-51846Tenda

    In Tenda AC7 v15.03.06.44, the wanSpeed parameter of the route /goform/AdvSetMacMtuWan has a stack buffer overflow vulnerability that can lead to remote arbitrary code execution.

  • 8.8 High severity

    microtar: Stack-based Buffer Overflow

    CVE-2026-55738Rxi

    A stack-based buffer overflow exists in the raw_to_header function in src/microtar.c in rxi microtar 0.1.0. The function copies the 100-byte name and linkname fields of a TAR header with strcpy without guaranteeing null termination of the source.

  • 8.6 High severity

    NPort W2150A-W4/W2250A-W4 Series: Stack-based Buffer Overflow

    CVE-2026-10829Moxa

    A stack-based buffer overflow vulnerability has been found in the NPort W2150A-W4/W2250A-W4 Series version 1.5 and earlier. This vulnerability stems from insufficient input validation of user-supplied input in the "Server location" parameter on the Basic setti

  • 8.8 High severity

    Zyxel GS1900 Series Switches Stack-Based Buffer Overflow Exploited

    CVE-2026-7273ZyxelEPSS 2.73%

    A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

  • 8.0 High severity

    SIP-T46U: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-12222Yealink

    A vulnerability was determined in Yealink SIP-T46U 108.86.0.118. Affected is the function mod_webd.BlueToothTest of the file /api/inner/bttest of the component Web FastCGI Service. Executing a manipulation of the argument btMac/pin/reserved can lead to stack-b

  • 8.0 High severity

    SIP-T46U: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-12221Yealink

    A vulnerability was found in Yealink SIP-T46U 108.86.0.118. This impacts the function sprintf of the file /api/upgrade/upgrade of the component Firmware Chunk Upload Handler. Performing a manipulation of the argument uid/start_offset results in stack-based buf

  • 8.0 High severity

    SIP-T46U: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-12220Yealink

    A vulnerability has been found in Yealink SIP-T46U 108.86.0.118. This affects the function mod_upgrade.SparePartsUpload of the file /api/upgrade/accupgradebychunk of the component Firmware Chunk Upload handler. Such manipulation of the argument uid leads to st

  • 8.0 High severity

    SIP-T46U: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-12218Yealink

    A vulnerability was detected in Yealink SIP-T46U 108.87.50.1. The affected element is the function StartReportInformation of the file /api/inner/beforewifitest of the component Web FastCGI Service. The manipulation of the argument port results in stack-based b

  • 7.3 High severity

    TinyWeb Server: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-12200Ritlabs

    A security vulnerability has been detected in Ritlabs TinyWeb Server up to 1.94 on Win32. This impacts an unknown function in the library libeay32.dll.html of the component Header Handler. The manipulation of the argument Authorization leads to stack-based buf

  • 8.2 High severity

    OTP: Stack-based Buffer Overflow

    CVE-2026-49759Erlang

    Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk. The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses

  • 9.1 Critical severity

    File Station 5: Stack-based Buffer Overflow

    CVE-2026-26241QNAP

    A buffer overflow vulnerability has been reported to affect File Station 5. The remote attackers can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5243

  • 9.1 Critical severity

    File Station 5: Stack-based Buffer Overflow

    CVE-2026-26240QNAP

    A buffer overflow vulnerability has been reported to affect File Station 5. The remote attackers can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5243

  • 8.1 High severity

    File Station 5: Stack-based Buffer Overflow

    CVE-2026-26239QNAP

    A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version

  • 7.2 High severity

    QTS: Stack-based Buffer Overflow

    CVE-2025-66280QNAP

    An integer overflow or wraparound vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to compromise the security of the system. We have a

  • 8.7 High severity

    simpleble: Stack-based Buffer Overflow

    CVE-2026-44634Simpleble

    SimpleBLE is a cross-platform library and bindings for Bluetooth Low Energy (BLE). Prior to version 0.14.0, there are multiple stack-based buffer overflow vulnerabilities in SimpleBLE. There is a stack overflow vulnerability in the dongl backend’s Protocol::si

  • 7.8 High severity

    Acrobat DC: Stack-based Buffer Overflow

    CVE-2026-47959Adobe

    Acrobat Reader versions 24.001.30365, 26.001.21651 and earlier are affected by a Stack-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in

  • 7.5 High severity

    Gpac: Stack-based Buffer Overflow

    CVE-2025-52292GPAC

    A stack buffer overflow in the filein_process function (in_file.c) of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

  • 7.8 High severity

    InCopy: Stack-based Buffer Overflow

    CVE-2026-34708Adobe

    InCopy versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow 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 victim must op

  • 7.8 High severity

    InDesign Desktop: Stack-based Buffer Overflow

    CVE-2026-34702Adobe

    InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow 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 vict

  • 7.8 High severity

    InDesign Desktop: Stack-based Buffer Overflow

    CVE-2026-34697Adobe

    InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow 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 vict

  • 7.8 High severity

    InDesign Desktop: Stack-based Buffer Overflow

    CVE-2026-34695Adobe

    InDesign Desktop versions 21.3, 20.5.3 and earlier are affected by a Stack-based Buffer Overflow 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 vict

  • 9.8 Critical severity

    SAP NetWeaver AS ABAP and ABAP Platform: Stack-based Buffer Overflow

    CVE-2026-27671SAP

    Due to improper RFC protocol validation in the SAP Kernel used by the Application Server ABAP of SAP NetWeaver and ABAP Platform, an unauthenticated attacker can send a crafted RFC request that exploits logical errors in memory management, leading to memory co

  • 8.2 High severity

    CPython: Stack-based Buffer Overflow

    CVE-2026-9669Python Software Foundation

    bz2.BZ2Decompressor objects could be reused after a decompression error. If an application caught the resulting OSError and retried with the same decompressor, crafted input could cause the decompressor to resume from an invalid internal state and perform out-

  • 8.8 High severity

    F451: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11557Tenda

    A weakness has been identified in Tenda F451 1.0.0.7/1.0.0.9. The affected element is the function fromNatlimit of the file /goform/Natlimit of the component Web Management Interface. Executing a manipulation of the argument page can lead to stack-based buffer

  • 8.8 High severity

    HG7: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11553Tenda

    A vulnerability was found in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formPPPEdit of the file /boaform/formPPPEdit. The manipulation of the argument encodename results in stack-based buffer overflow. The attack can be launched remot

  • 8.8 High severity

    AC18: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11528Tenda

    A vulnerability was found in Tenda AC18 15.03.05.05. The affected element is the function sub_45304 of the file /goform/getRebootStatus of the component Web Management Interface. The manipulation of the argument callback results in stack-based buffer overflow.

  • 8.8 High severity

    W20E: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11524Tenda

    A vulnerability has been found in Tenda W20E 15.11.0.6. Impacted is the function modifyWifiFilterRules of the file /goform/modifyWifiFilterRules of the component Web Management Interface. The manipulation of the argument wifiFilterListRemark leads to stack-bas

  • 8.8 High severity

    W20E: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11523Tenda

    A flaw has been found in Tenda W20E 15.11.0.6. This issue affects the function formPortalAuth of the file /goform/PortalAuth of the component Web Management Interface. Executing a manipulation of the argument gotoUrl can lead to stack-based buffer overflow. Th

  • 8.8 High severity

    W20E: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11522Tenda

    A vulnerability was detected in Tenda W20E 15.11.0.6. This vulnerability affects the function formSetPortMirror of the file /goform/setPortMirror. Performing a manipulation of the argument portMirrorMirroredPorts results in stack-based buffer overflow. The att

  • 8.8 High severity

    CX12L: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11504Tenda

    A vulnerability was detected in Tenda CX12L 16.03.53.12. The impacted element is the function setSchedWifi of the file /goform/openSchedWifi of the component Wi-Fi Schedule Configuration Endpoint. Performing a manipulation of the argument schedStartTime/schedE

  • 8.8 High severity

    CX12L: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11503Tenda

    A security vulnerability has been detected in Tenda CX12L 16.03.53.12. The affected element is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set of the component Wi-Fi Configuration Endpoint. Such manipulation of the argument ss

  • 9.8 Critical severity

    HG7: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11499TendaEPSS 6.64%

    A vulnerability was determined in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formDOMAINBLK of the file /boaform/formDOMAINBLK. Executing a manipulation of the argument blkDomain can lead to stack-based buffer overflow. The attack may

  • 8.8 High severity

    HG7: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11498TendaEPSS 3.8%

    A vulnerability was found in Tenda HG7, HG9 and HG10 300001138_en_xpon. Affected by this issue is the function asp_voip_OtherSet of the file /boaform/voip_other_set of the component Web Management Interface. Performing a manipulation of the argument funckey_tr

  • 8.8 High severity

    JD Cloud Box AX6600: Improper Restriction of Operations within the Bounds of a Memory Buffer

    CVE-2026-11413JingDong

    A security vulnerability has been detected in JingDong JD Cloud Box AX6600 4.5.3.r4546. The impacted element is the function set_macfilter of the file /sbin/jdcweb_rpc. The manipulation leads to stack-based buffer overflow. It is possible to initiate the attac

  • 7.8 High severity

    Red Hat Enterprise Linux 10: Stack-based Buffer Overflow

    CVE-2026-50259Red Hat

    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled of

  • 7.8 High severity

    Red Hat Enterprise Linux 10: Stack-based Buffer Overflow

    CVE-2026-50258Red Hat

    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client

  • 7.8 High severity

    Red Hat Enterprise Linux 10: Stack-based Buffer Overflow

    CVE-2026-50256Red Hat

    A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byt

  • 8.8 High severity

    Chrome: Stack-based Buffer Overflow

    CVE-2026-11024Google

    Stack buffer overflow in Skia in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially exploit stack corruption via a crafted HTML page. (Chromium security severity: Medium)

  • 8.3 High severity

    Chrome: Stack-based Buffer Overflow

    CVE-2026-10898Google

    Stack buffer overflow in GPU in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)

  • 7.5 High severity

    FreeIPMI: Stack-based Buffer Overflow

    CVE-2026-50031FreeIPMI

    ipmi-oem in FreeIPMI before 1.6.18 has exploitable buffer overflows on response messages. The Intelligent Platform Management Interface (IPMI) specification defines a set of interfaces for platform management. It is implemented by a large number of hardware ma