Falhas do tipo CWE-787

5.843 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-2022-44191CRITICALNetgear R7000P V1.3.1.64 is vulnerable to Buffer Overflow via parameters KEY1 and KEY2.EPSS 1.2%CVE-2022-3045HIGHInsufficient validation of untrusted input in V8 in Google Chrome prior to 105.0.5195.52 allowed a remote attacker to potentially exploit heEPSS 1.2%CVE-2026-116928CRITICALWindows Search Remote Code Execution VulnerabilityEPSS 1.2%CVE-2019-12810—A memory corruption vulnerability exists in the .PSD parsing functionality of ALSee v5.3 ~ v8.39. A specially crafted .PSD file can cause anEPSS 1.2%CVE-2022-43237MEDIUMLibde265 v1.0.8 was discovered to contain a stack-buffer-overflow vulnerability via void put_epel_hv_fallback<unsigned short> in fallback-moEPSS 1.2%CVE-2022-43242MEDIUMLibde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via mc_luma<unsigned char> in motion.cc. This vulnerability aEPSS 1.2%CVE-2014-125026CRITICALOut-of-bounds write in github.com/cloudflare/golz4EPSS 1.2%CVE-2023-37712CRITICALTenda AC1206 V15.03.06.23, F1202 V1.2.0.20(408), and FH1202 V1.2.0.20(408) were discovered to contain a stack overflow in the page parameterEPSS 1.2%CVE-2022-42227HIGHjsonlint 1.0 is vulnerable to heap-buffer-overflow via /home/hjsz/jsonlint/src/lexer.EPSS 1.2%CVE-2021-20987HIGHHilscher: EtherNet/IP stack crash for specific CIP serviceEPSS 1.2%CVE-2020-25171—Fuji Electric V-Server LiteEPSS 1.2%CVE-2023-47004HIGHBuffer Overflow vulnerability in Redis RedisGraph v.2.x through v.2.12.8 and fixed in v.2.12.9 allows an attacker to execute arbitrary code EPSS 1.2%CVE-2019-13721HIGHUse after free in PDFium in Google Chrome prior to 78.0.3904.87 allowed a remote attacker to potentially exploit heap corruption via a craftEPSS 1.1%CVE-2021-43612HIGHIn lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via shEPSS 1.1%CVE-2025-24231CRITICALThe issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.4, macOS Sonoma 14.7.5, macOS Ventura 13.7.5. An app mEPSS 1.1%CVE-2022-26716HIGHA memory corruption issue was addressed with improved state management. This issue is fixed in tvOS 15.5, iOS 15.5 and iPadOS 15.5, watchOS EPSS 1.1%CVE-2022-43250MEDIUMLibde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via put_qpel_0_0_fallback_16 in fallback-motion.cc. This vulnEPSS 1.1%CVE-2022-43241MEDIUMLibde265 v1.0.8 was discovered to contain an unknown crash via ff_hevc_put_hevc_qpel_v_3_8_sse in sse-motion.cc. This vulnerability allows aEPSS 1.1%CVE-2022-43253MEDIUMLibde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via put_unweighted_pred_16_fallback in fallback-motion.cc. ThEPSS 1.1%CVE-2022-43240MEDIUMLibde265 v1.0.8 was discovered to contain a heap-buffer-overflow vulnerability via ff_hevc_put_hevc_qpel_h_2_v_1_sse in sse-motion.cc. This EPSS 1.1%