Falhas do tipo CWE-787

5.133 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-2021-44707HIGHAdobe Acrobat Reader DC OTF Font Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 8.4%CVE-2021-28310HIGHWin32k Elevation of Privilege VulnerabilityEPSS 8.3%KEVCVE-2021-3517HIGHThere is a flaw in the xml entity encoding functionality of libxml2 in versions before 2.9.11. An attacker who is able to supply a crafted fEPSS 8.3%CVE-2021-40731HIGHAdobe Acrobat Reader DC JPEG2000 Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 8.3%CVE-2022-40942CRITICALTenda TX3 US_TX3V1.0br_V16.03.13.11 is vulnerable to stack overflow via compare_parentcontrol_time.EPSS 8.1%CVE-2018-12115—In all versions of Node.js prior to 6.14.4, 8.11.4 and 10.9.0 when used with UCS-2 encoding (recognized by Node.js under the names `'ucs2'`,EPSS 8.0%CVE-2019-12900CRITICALBZ2_decompress in decompress.c in bzip2 through 1.0.6 has an out-of-bounds write when there are many selectors.EPSS 8.0%CVE-2021-45061HIGHAdobe Acrobat Reader DC Font Parsing Out-Of-Bounds Write Remote Code Execution VulnerabilityEPSS 7.9%CVE-2025-5419HIGHOut of bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially exploit heap corruption EPSS 7.8%KEVCVE-2018-8788—FreeRDP prior to version 2.0.0-rc4 contains an Out-Of-Bounds Write of up to 4 bytes in function nsc_rle_decode() that results in a memory coEPSS 7.4%CVE-2023-7024HIGHHeap buffer overflow in WebRTC in Google Chrome prior to 120.0.6099.129 allowed a remote attacker to potentially exploit heap corruption viaEPSS 7.4%KEVCVE-2022-24521HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 7.1%KEVCVE-2026-28819MEDIUMAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS SequoiaEPSS 7.1%CVE-2019-13333HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 9.5.0.20723. User interacEPSS 6.8%CVE-2023-46224CRITICALAn attacker sending specially crafted data packets to the Mobile Device Server can cause memory corruption which could result to a Denial ofEPSS 6.8%CVE-2023-26369HIGH[Google Project Zero] Adobe Acrobat DC OOBW 0-day actively exploited in the wildEPSS 6.6%KEVCVE-2025-43400MEDIUMAn out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.1 and iPadOS 18.7.1, iOS 26.0.1 anEPSS 6.4%CVE-2026-40688MEDIUMAn out-of-bounds write vulnerability [CWE-787] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.3, FortiWeb 7.6.0 through 7.6.6, FortiWeEPSS 6.4%CVE-2026-3342HIGHWatchGuard Firebox Out of Bounds Write VulnerabilityEPSS 6.4%CVE-2020-15795HIGHA vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions <EPSS 6.4%