Weaknesses of type CWE-121

3,820 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-2025-1758MEDIUMImproper Input Validation vulnerability in Progress LoadMaster allows : Buffer OverflowThis issue affects: * LoadMaster: 7.2.40.0 and aboveEPSS 4.8%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-2022-20702CRITICALCisco Small Business RV Series Routers VulnerabilitiesEPSS 4.6%CVE-2025-15255CRITICALTenda W6-S R7websSsecurityHandler httpd stack-based overflowEPSS 4.5%CVE-2019-0008CRITICALQFX5000 Series, EX4300, EX4600: A stack buffer overflow vulnerability in Packet Forwarding Engine manager (FXPC) processEPSS 4.5%CVE-2026-2017CRITICALIP-COM W30AP POST Request wx3auth R7WebsSecurityHandler stack-based overflowEPSS 4.5%CVE-2024-31449HIGHLua library commands may lead to stack overflow and RCE in RedisEPSS 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-2022-0194CRITICALThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required tEPSS 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-2025-7762HIGHD-Link DI-8100 HTTP Request menu_nat_more.asp stack-based overflowEPSS 4.4%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-2012-10021CRITICALD-Link DIR-605L Captcha Handling Buffer OverflowEPSS 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%CVE-2022-23125CRITICALThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Netatalk. Authentication is not required tEPSS 4.4%CVE-2018-10620—AVEVA InduSoft Web Studio v8.1 and v8.1SP1, and InTouch Machine Edition v2017 8.1 and v2017 8.1 SP1 a remote user could send a carefully craEPSS 4.3%CVE-2025-9392HIGHLinksys RE6250/RE6300/RE6350/RE6500/RE7000/RE9000 qosClassifier stack-based overflowEPSS 4.2%CVE-2020-17413HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 10.0.0.35798. User interaEPSS 4.2%CVE-2024-44674MEDIUMD-Link COVR-2600R FW101b05 is vulnerable to Buffer Overflow. In the function sub_24E28, the HTTP_REFERER is obtained through an environment EPSS 4.2%