Fallos del tipo CWE-121

4140 resultados

Estouro de buffer na pilha

Ocorre quando código escreve dados além dos limites de um buffer alocado na pilha (stack), sobrescrevendo informações críticas como endereços de retorno ou variáveis locais. Um atacante pode explorar isso para executar código arbitrário ou causar crash da aplicação.

Ejemplo

Uma função copia uma string de entrada diretamente em um array de 64 bytes sem validar o tamanho: `char buffer[64]; strcpy(buffer, user_input);` Se o usuário enviar uma string com 200 bytes, ela sobrescreverá o endereço de retorno e pode redirecionar a execução para código malicioso.

Cómo mitigar

Use funções seguras com limite de tamanho (`strncpy`, `snprintf`), valide e sanitize entradas antes de copiar, implemente proteções em tempo de execução (stack canaries, ASLR, DEP) e considere usar linguagens com verificação de limites automática quando possível.

CVE-2025-68706CRITICALA stack-based buffer overflow exists in the GoAhead-Webs HTTP daemon on KuWFi 4G LTE AC900 devices with firmware 1.0.13. The /goform/formMulEPSS 5.0%CVE-2025-1758MEDIUMImproper Input Validation vulnerability in Progress LoadMaster allows : Buffer OverflowThis issue affects: * LoadMaster: 7.2.40.0 and aboveEPSS 4.9%CVE-2022-4634HIGHCVE-2022-4634EPSS 4.9%CVE-2022-20711CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 4.9%CVE-2020-7065HIGHmb_strtolower (UTF-32LE): stack-buffer-overflow at php_unicode_tolower_fullEPSS 4.9%CVE-2026-2017CRITICALIP-COM W30AP POST Request wx3auth R7WebsSecurityHandler stack-based overflowEPSS 4.8%CVE-2012-10060CRITICALSysax Multi Server < 5.55 SSH Username Buffer OverflowEPSS 4.7%CVE-2019-5619—AASync.com AASync Stack-based Buffer OverflowEPSS 4.7%CVE-2025-22467CRITICALA stack-based buffer overflow in Ivanti Connect Secure before version 22.7R2.6 allows a remote authenticated attacker to achieve remote codeEPSS 4.7%CVE-2025-15255CRITICALTenda W6-S R7websSsecurityHandler httpd stack-based overflowEPSS 4.7%CVE-2010-20121CRITICALEasyFTP Server <= 1.7.0.11 CWD Command Stack Buffer OverflowEPSS 4.6%CVE-2022-20702CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 4.6%CVE-2025-10773HIGHB-Link BL-AC2100 Web Management set_delshrpath_cfg delshrpath stack-based overflowEPSS 4.6%CVE-2019-0008CRITICALQFX5000 Series, EX4300, EX4600: A stack buffer overflow vulnerability in Packet Forwarding Engine manager (FXPC) processEPSS 4.5%CVE-2019-15695—TigerVNC version prior to 1.10.1 is vulnerable to stack buffer overflow, which could be triggered from CMsgReader::readSetCursor. This vulneEPSS 4.5%CVE-2024-31449HIGHLua library commands may lead to stack overflow and RCE in RedisEPSS 4.5%CVE-2017-6023—An issue was discovered in Fatek Automation PLC Ethernet Module. The affected Ether_cfg software configuration tool runs on the following FaEPSS 4.4%CVE-2022-23122CRITICALThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required tEPSS 4.4%CVE-2022-0194CRITICALThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required tEPSS 4.4%CVE-2019-5153CRITICALAn exploitable remote code execution vulnerability exists in the iw_webs configuration parsing functionality of the Moxa AWK-3131A firmware EPSS 4.4%