Falhas do tipo CWE-121

4.132 resultados

Estouro de buffer na pilha

Ocorre quando código escreve mais dados em um buffer alocado na pilha do que sua capacidade permite, sobrescrevendo dados adjacentes (variáveis, endereços de retorno). Um atacante pode explorar isso para executar código arbitrário ou crashar a aplicação alterando o fluxo de execução.

Exemplo

Uma função C que copia uma string do usuário diretamente em um array local sem validar tamanho: `char buffer[10]; strcpy(buffer, user_input);`. Se user_input tiver 50 caracteres, os 40 extras sobrescrevem a pilha, incluindo potencialmente o endereço de retorno da função.

Como mitigar

Use funções seguras que limitam escrita (strncpy, snprintf em vez de strcpy/sprintf), valide tamanho de entrada antes de copiar, ative proteções do compilador (stack canaries, ASLR) e use ferramentas de análise estática para detectar cópias sem limite.

CVE-2020-25159—Real Time Automation EtherNet/IPEPSS 3.0%CVE-2026-2910HIGHTenda HG9 formPing6 stack-based overflowEPSS 3.0%CVE-2021-1337HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 3.0%CVE-2021-29097HIGHArcGIS general raster security update: buffer overflowEPSS 3.0%CVE-2020-28384—A vulnerability has been identified in Solid Edge SE2020 (All Versions < SE2020MP12), Solid Edge SE2021 (All Versions < SE2021MP2). AffectedEPSS 3.0%CVE-2026-3808HIGHTenda FH1202 webtypelibrary formWebTypeLibrary stack-based overflowEPSS 3.0%CVE-2020-26989—A vulnerability has been identified in JT2Go (All versions < V13.1.0.1), Solid Edge SE2020 (All Versions < SE2020MP12), Solid Edge SE2021 (AEPSS 3.0%CVE-2013-10042CRITICALfreeFTPd <= 1.0.10 PASS Command Stack-Based Buffer OverflowEPSS 3.0%CVE-2019-13520—Multiple buffer overflow issues have been identified in Alpha5 Smart Loader: All versions prior to 4.2. An attacker could use specially crafEPSS 2.9%CVE-2020-2501—Stack Buffer Overflow in Surveillance StationEPSS 2.9%CVE-2021-21889CRITICALA stack-based buffer overflow vulnerability exists in the Web Manager Ping functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). EPSS 2.9%CVE-2021-43983HIGHWECON LeviStudioUEPSS 2.9%CVE-2019-14897MEDIUMA stack-based buffer overflow was found in the Linux kernel, version kernel-2.6.32, in Marvell WiFi chip driver. An attacker is able to causEPSS 2.9%CVE-2024-39605HIGHDelta Electronics DIAScreen Stack-based Buffer OverflowEPSS 2.9%CVE-2020-7007—In Moxa EDS-G516E Series firmware, Version 5.2 or lower, the attacker may execute arbitrary codes or target the device, causing it to go outEPSS 2.9%CVE-2021-27248HIGHThis vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of D-Link DAP-2020 v1.01rc001 Wi-FiEPSS 2.9%CVE-2021-1328HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.9%CVE-2021-1332HIGHCisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.9%CVE-2021-1168HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.9%CVE-2021-1186HIGHCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Management Interface Remote Command Execution and Denial of Service VulnerabilitiesEPSS 2.9%