Falhas do tipo CWE-787
5.142 resultadosEscrita 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-2021-32998HIGHThe FANUC R-30iA and R-30iB series controllers are vulnerable to an out-of-bounds write, which may allow an attacker to remotely execute arbEPSS 1.2%CVE-2023-25283HIGHA stack overflow vulnerability in D-Link DIR820LA1_FW106B02 allows attackers to cause a denial of service via the reserveDHCP_HostName_1.1.1EPSS 1.2%CVE-2024-12648CRITICALBuffer overflow in TIFF data EXIF tag processing of Small Office Multifunction Printers and Laser Printers(*) which may allow an attacker onEPSS 1.2%CVE-2024-21661HIGHArgo CD Denial of Service (DoS) Vulnerability Due to Unsafe Array Modification in Multi-threaded EnvironmentEPSS 1.2%CVE-2023-34609HIGHAn issue was discovered flexjson thru 3.3 allows attackers to cause a denial of service or other unspecified impacts via crafted object thatEPSS 1.2%CVE-2021-22752—A CWE-787: Out-of-bounds write vulnerability exists inIGSS Definition (Def.exe) V15.0.0.21140 and prior that could result in loss of data orEPSS 1.2%CVE-2021-22754—A CWE-787: Out-of-bounds write vulnerability exists inIGSS Definition (Def.exe) V15.0.0.21140 and prior that could result in loss of data orEPSS 1.2%CVE-2021-22750—A CWE-787: Out-of-bounds write vulnerability exists inIGSS Definition (Def.exe) V15.0.0.21041 and prior that could result in loss of data orEPSS 1.2%CVE-2023-49355HIGHdecToString in decNumber/decNumber.c in jq 88f01a7 has a one-byte out-of-bounds write via the " []-1.2e-1111111111" input. NOTE: this is notEPSS 1.2%CVE-2021-44005—A vulnerability has been identified in JT2Go (All versions < V13.2.0.5), Teamcenter Visualization (All versions < V13.2.0.5). The Tiff_LoadeEPSS 1.2%CVE-2026-85437CRITICALMOOS-IvP through 24.8.1 Buffer Overflow in IvP Function String DecodersEPSS 1.2%CVE-2021-44006—A vulnerability has been identified in JT2Go (All versions < V13.2.0.5), Teamcenter Visualization (All versions < V13.2.0.5). The Tiff_LoadeEPSS 1.2%CVE-2022-40008CRITICALSWFTools commit 772e55a was discovered to contain a heap-buffer overflow via the function readU8 at /lib/ttf.c.EPSS 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-2022-46393CRITICALAn issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. There is a potential heap-based buffer overflow and heap-based buffeEPSS 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-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-2020-25171—Fuji Electric V-Server LiteEPSS 1.2%CVE-2023-4154HIGHSamba: ad dc password exposure to privileged users and rodcsEPSS 1.2%CVE-2022-40868CRITICALTenda W20E router V15.11.0.6 (US_W20EV4.0br_V15.11.0.6(1068_1546_841)_CN_TDC) contains a stack overflow vulnerability in the function formDeEPSS 1.1%