Weaknesses of type CWE-121

3,834 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-2026-9150MEDIUMLibsolv: stack-based buffer overflow in libsolv's debian metadata parser when handling sha384/sha512 checksumsEPSS 0.6%CVE-2021-38427MEDIUMRTI Connext DDS Professional and Connext DDS Secure Stack-based Buffer OverflowEPSS 0.6%CVE-2026-35085HIGHStack buffer overflow in method gdv-serverconfigEPSS 0.6%CVE-2021-38433MEDIUMRTI Connext DDS Professional and Connext DDS Secure Stack-based Buffer OverflowEPSS 0.6%CVE-2026-25790MEDIUMWazuh has Stack-Based Buffer Overflow in Security Configuration Assessment JSON ParserEPSS 0.6%CVE-2023-41279MEDIUMQTS, QuTS hero, QuTScloudEPSS 0.6%CVE-2023-41280MEDIUMQTS, QuTS hero, QuTScloudEPSS 0.6%CVE-2026-81945HIGHPLANET IGS-5225-8P2T4S V1/V2 Admin Stack-Based Buffer Overflow via Web ServerEPSS 0.6%CVE-2023-54334HIGHExplorer32++ 1.3.5.531 - Buffer overflowEPSS 0.6%CVE-2025-1594MEDIUMFFmpeg AAC Encoder aacenc_tns.c ff_aac_search_for_tns stack-based overflowEPSS 0.6%CVE-2024-32320MEDIUMTenda AC500 V2.0.1.9(1307) firmware has a stack overflow vulnerability via the timeZone parameter in the formSetTimeZone function.EPSS 0.6%CVE-2024-40416MEDIUMA vulnerability in /goform/SetVirtualServerCfg in the sub_6320C function in Tenda AX1806 1.0.0.1 firmware leads to stack-based buffer overflEPSS 0.6%CVE-2021-34982HIGHNETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution VulnerabilityEPSS 0.6%CVE-2026-69412HIGHWindows DHCP Server Remote Code Execution VulnerabilityEPSS 0.6%CVE-2025-11783HIGHStack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50EPSS 0.6%CVE-2026-22904CRITICALStack Overflow via Oversized Cookie Fields in lighttpdEPSS 0.6%CVE-2025-3203MEDIUMTenda W18E setModules formSetAccountList stack-based overflowEPSS 0.6%CVE-2026-88289HIGHGV-LPC2011/LPC2211 - Multiple Pre-Authentication Stack Buffer Overflows in VLSVR Request HandlersEPSS 0.6%CVE-2020-27749—A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their correspondiEPSS 0.6%CVE-2024-50694CRITICALIn SunGrow WiNet-SV200.001.00.P027 and earlier versions, when copying the timestamp read from an MQTT message, the underlying code does not EPSS 0.6%