Falhas do tipo CWE-787

5.127 resultados

Escrita fora dos limites de memória

Ocorre quando um programa escreve dados em um endereço de memória fora da área alocada para um buffer ou variável. O código não valida o tamanho ou índice antes de gravar, permitindo sobrescrita de dados adjacentes, corrupção de estruturas críticas ou execução de código arbitrário.

Exemplo

Um formulário web que copia dados do usuário para um buffer de 256 bytes sem validar o tamanho da entrada. Se o atacante envia 500 bytes, a escrita transborda e sobrescreve a pilha, podendo hijackear o endereço de retorno da função.

Como mitigar

Use funções seguras de cópia (strncpy, strlcpy ao invés de strcpy; memcpy com tamanho máximo explícito) e sempre valide comprimento e índices antes de escrever. Em linguagens modernas, prefira estruturas com bounds-checking automático (arrays em Java, Rust, etc).

CVE-2021-30761HIGHA memory corruption issue was addressed with improved state management. This issue is fixed in iOS 12.5.4. Processing maliciously crafted weEPSS 10.5%KEVCVE-2022-27787HIGHAdobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 10.3%CVE-2025-1240HIGHWinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 10.3%CVE-2024-0223HIGHHeap buffer overflow in ANGLE in Google Chrome prior to 120.0.6099.199 allowed a remote attacker to potentially exploit heap corruption via EPSS 10.2%CVE-2023-42115CRITICALExim AUTH Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 10.0%CVE-2022-32893HIGHAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.6.1 and iPadOS 15.6.1, macOS MontereEPSS 9.9%KEVCVE-2022-44366CRITICALTenda i21 V1.0.0.14(4656) is vulnerable to Buffer Overflow via /goform/setDiagnoseInfo.EPSS 9.9%CVE-2022-27792HIGHAdobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 9.8%CVE-2022-27793HIGHAdobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 9.8%CVE-2022-40851CRITICALTenda AC15 V15.03.05.19 contained a stack overflow via the function fromAddressNat.EPSS 9.7%CVE-2022-46475CRITICALD-Link DIR 645A1 1.06B01_Beta01 was discovered to contain a stack overflow via the service= variable in the genacgi_main function.EPSS 9.5%CVE-2022-0995HIGHAn out-of-bounds (OOB) memory write flaw was found in the Linux kernel’s watch_queue event notification subsystem. This flaw can overwrite pEPSS 9.4%KEVCVE-2025-4918CRITICALOut-of-bounds access when resolving Promise objectsEPSS 9.4%CVE-2023-42917HIGHA memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.EPSS 9.3%KEVCVE-2019-3855HIGHAn integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from EPSS 9.3%CVE-2020-17416HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.0.0.35798. User interactioEPSS 9.1%CVE-2021-22672—Delta Electronics' CNCSoft ScreenEditor in versions prior to v1.01.30 could allow the corruption of data, a denial-of-service condition, or EPSS 9.0%CVE-2010-4398HIGHStack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SPEPSS 8.7%KEVCVE-2023-46977CRITICALTOTOLINK LR1200GB V9.1.0u.6619_B20230130 was discovered to contain a stack overflow via the password parameter in the function loginAuth.EPSS 8.7%CVE-2025-4919HIGHOut-of-bounds access when optimizing linear sumsEPSS 8.6%