Weaknesses of type CWE-121

4,132 results

Estouro de buffer na pilha

Ocorre quando um programa escreve mais dados em um buffer alocado na pilha do que ele pode conter, sobrescrevendo dados adjacentes (variáveis, endereços de retorno, ponteiros). Um atacante pode explorar isso para executar código arbitrário ou causar travamento.

Example

Um programa lê uma string do usuário com gets() ou strcpy() sem validar o tamanho, copiando 500 bytes para um buffer de 64 bytes. O excesso sobrescreve o endereço de retorno da função, permitindo desviar a execução para código malicioso.

How to mitigate

Use funções seguras (strncpy, fgets, snprintf) que aceitam limite de bytes; implemente verificações de limites explícitas no código; ative proteções do compilador/SO (stack canaries, DEP/NX, ASLR); use linguagens com verificação automática de limites ou ferramentas de análise estática.

CVE-2023-21604HIGHAdobe Acrobat Reader Stack-based Buffer Overflow Arbitrary code executionEPSS 2.6%CVE-2025-24052HIGHWindows Agere Modem Driver Elevation of Privilege VulnerabilityEPSS 2.5%CVE-2023-21610HIGHAdobe Acrobat Reader Stack-based Buffer Overflow Arbitrary code executionEPSS 2.5%CVE-2024-30083HIGHWindows Standards-Based Storage Management Service Denial of Service VulnerabilityEPSS 2.5%CVE-2025-65222MEDIUMTenda AC21 V16.03.08.16 is vulnerable to Buffer Overflow via the rebootTime parameter of /goform/SetSysAutoRebbotCfg.EPSS 2.5%CVE-2020-1896—A stack overflow vulnerability in Facebook Hermes 'builtin apply' prior to commit 86543ac47e59c522976b5632b8bf9a2a4583c7d2 (https://github.cEPSS 2.5%CVE-2024-35388HIGHTOTOLINK NR1800X v9.1.0u.6681_B20230703 was discovered to contain a stack overflow via the password parameter in the function urldecodeEPSS 2.5%CVE-2026-5204HIGHTenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflowEPSS 2.5%CVE-2023-27404HIGHA vulnerability has been identified in Tecnomatix Plant Simulation (All versions < V2201.0006). The affected application is vulnerable to stEPSS 2.5%CVE-2021-33019—A stack-based buffer overflow vulnerability in Delta Electronics DOPSoft Version 4.00.11 and prior may be exploited by processing a speciallEPSS 2.5%CVE-2021-43299—Stack overflow in PJSUA API when calling pjsua_player_create. An attacker-controlled 'filename' argument may cause a buffer overflow since iEPSS 2.5%CVE-2018-14318—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Galaxy S8 G950FXXU1AQL5. User inEPSS 2.5%CVE-2019-8263—UltraVNC revision 1205 has stack-based buffer overflow vulnerability in VNC client code inside ShowConnInfo routine, which leads to a denialEPSS 2.5%CVE-2024-39359CRITICALA stack-based buffer overflow vulnerability exists in the wireless.cgi DeleteMac() functionality of Wavlink AC3000 M33A8.V5030.210505. A speEPSS 2.5%CVE-2024-39357CRITICALA stack-based buffer overflow vulnerability exists in the wireless.cgi SetName() functionality of Wavlink AC3000 M33A8.V5030.210505. A speciEPSS 2.5%CVE-2024-39603CRITICALA stack-based buffer overflow vulnerability exists in the wireless.cgi set_wifi_basic_mesh() functionality of Wavlink AC3000 M33A8.V5030.210EPSS 2.5%CVE-2024-39757CRITICALA stack-based buffer overflow vulnerability exists in the wireless.cgi AddMac() functionality of Wavlink AC3000 M33A8.V5030.210505. A speciaEPSS 2.5%CVE-2026-56766HIGHHydra - Stack Buffer Overflow in NTLM Authentication HandlerEPSS 2.4%CVE-2009-20007CRITICALTalkative IRC v0.4.4.16 Response Buffer OverflowEPSS 2.4%CVE-2022-20710CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 2.4%