Weaknesses of type CWE-120

3,164 results

Estouro de buffer clássico

A aplicação copia dados para um buffer sem validar o tamanho, permitindo que um atacante sobrescreva memória adjacente, incluindo endereços de retorno ou ponteiros de função. Isso resulta na execução de código arbitrário com os privilégios da aplicação.

Example

Um programa lê uma entrada do usuário com gets() ou strcpy() sem limitar quantos bytes podem ser copiados. Um atacante fornece uma entrada maior que o buffer, sobrescrevendo a pilha e injetando código malicioso que será executado quando a função retornar.

How to mitigate

Use funções seguras que validam limites (strncpy, snprintf, fgets) e compile com proteções de pilha ativadas (-fstack-protector-all no GCC). Além disso, implemente validação de entrada no tamanho esperado e considere linguagens com gerenciamento automático de memória para novos projetos.

CVE-2022-44283CRITICALAVS Audio Converter 10.3 is vulnerable to Buffer Overflow.EPSS 1.2%CVE-2025-4496HIGHTOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflowEPSS 1.2%CVE-2026-6014HIGHD-Link DIR-513 POST Request formAdvanceSetup buffer overflowEPSS 1.2%CVE-2026-8260HIGHD-Link DCS-935L HNAP Service hnap_service SetDeviceSettings buffer overflowEPSS 1.2%CVE-2024-7335HIGHTOTOLINK EX200 getSaveConfig buffer overflowEPSS 1.2%CVE-2025-7345HIGHGdk‑pixbuf: heap‑buffer‑overflow in gdk‑pixbufEPSS 1.2%CVE-2021-28196MEDIUMASUS BMC's firmware: buffer overflow - Generate SSL certificate functionEPSS 1.2%CVE-2021-28190MEDIUMASUS BMC's firmware: buffer overflow - Generate new certificate functionEPSS 1.2%CVE-2021-28187MEDIUMASUS BMC's firmware: buffer overflow - Generate new SSL certificateEPSS 1.2%CVE-2026-51934CRITICALBuffer Overflow vulnerability in Shenzhen Jixiang Tengda Technology Co., Ltd. Tenda A18 v.15.13.07.09 allows a remote attacker to execute arEPSS 1.2%CVE-2024-7187HIGHTOTOLINK A3600R cstecgi.cgi UploadCustomModule buffer overflowEPSS 1.2%CVE-2020-7564MEDIUMA CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in the Web Server on Modicon M340, MoEPSS 1.1%CVE-2021-21827HIGHA heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. Within `DecEPSS 1.1%CVE-2021-21826HIGHA heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. Within `DecEPSS 1.1%CVE-2021-21828HIGHA heap-based buffer overflow vulnerability exists in the XML Decompression DecodeTreeBlock functionality of AT&T Labs Xmill 0.7. In the defaEPSS 1.1%CVE-2023-39206LOWBuffer overflow in some Zoom clients may allow an unauthenticated user to conduct a denial of service via network access.EPSS 1.1%CVE-2022-43343HIGHN-Prolog v1.91 was discovered to contain a global buffer overflow vulnerability in the function gettoken() at Main.c.EPSS 1.1%CVE-2022-20880MEDIUMCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service VulnerabilitiesEPSS 1.1%CVE-2022-20886MEDIUMCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service VulnerabilitiesEPSS 1.1%CVE-2022-20873MEDIUMCisco Small Business RV110W, RV130, RV130W, and RV215W Routers Remote Command Execution and Denial of Service VulnerabilitiesEPSS 1.1%