Fallos del tipo CWE-126

526 resultados

Leitura excessiva de buffer na pilha

Ocorre quando o código lê mais dados de um buffer alocado na pilha do que o tamanho dele permite. O atacante consegue expor dados sensíveis que estão em posições de memória adjacentes (senhas, tokens, dados de outros processos) ou causar crash da aplicação.

Ejemplo

Uma função recebe uma string de 64 bytes na pilha, mas usa strcpy() ou memcpy() sem validar o tamanho real, lendo 128 bytes. Os 64 bytes extras vêm de outras variáveis locais ou frames de função anteriores, expondo informações confidenciais.

Cómo mitigar

Use funções seguras com limite explícito de bytes (strncpy, snprintf, memcpy com tamanho validado) ou linguagens com bounds-checking automático. Valide sempre o tamanho de entrada contra o buffer antes de ler, e use ferramentas estáticas (ASan, Clang Static Analyzer) durante desenvolvimento.

CVE-2024-31080HIGHXorg-x11-server: heap buffer overread/data leakage in procxigetselectedeventsEPSS 0.5%CVE-2025-24068MEDIUMWindows Storage Management Provider Information Disclosure VulnerabilityEPSS 0.5%CVE-2024-9029HIGHFreeimage: heap buffer overflow in tiff_read_iptc_profileEPSS 0.5%CVE-2026-58013MEDIUMGlib: buffer over-read in glib/giochannel.c via "g_io_channel_read_line_backend"EPSS 0.5%CVE-2026-78516MEDIUMWindows Storage Information Disclosure VulnerabilityEPSS 0.5%CVE-2025-53736MEDIUMMicrosoft Word Information Disclosure VulnerabilityEPSS 0.5%CVE-2023-21697MEDIUMWindows Internet Storage Name Service (iSNS) Server Information Disclosure VulnerabilityEPSS 0.5%CVE-2026-58010MEDIUMGlib: buffer over-read in glib/gvariant-serialiser.c via gvs_tuple_is_normal()EPSS 0.5%CVE-2026-58012MEDIUMGlib: buffer over-read in g_regex_replace() via glib/gregex.c:string_append() and g_utf8_next_char()EPSS 0.5%CVE-2026-55970MEDIUMApache Thrift: C++ heap out-of-bounds read in THeaderTransport::readHeaderFormat()EPSS 0.5%CVE-2023-33098HIGHBuffer Over-read in WLAN FirmwareEPSS 0.5%CVE-2023-33081HIGHBuffer over-read in WLAN FirmwareEPSS 0.5%CVE-2023-33097HIGHBuffer Over-read in WLAN FirmwareEPSS 0.5%CVE-2026-53587HIGHlibgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_dataEPSS 0.5%CVE-2024-3077MEDIUMBluetooth: integer underflow in gatt_find_info_rspEPSS 0.5%CVE-2026-55036HIGHMicrosoft Excel Remote Code Execution VulnerabilityEPSS 0.5%CVE-2025-47973HIGHMicrosoft Virtual Hard Disk Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2025-47971HIGHMicrosoft Virtual Hard Disk Elevation of Privilege VulnerabilityEPSS 0.5%CVE-2024-52877HIGHAn issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before versioEPSS 0.5%CVE-2024-52878HIGHAn issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before versioEPSS 0.5%