Falhas do tipo CWE-367

800 resultados

Condição de corrida entre verificação e uso (TOCTOU)

A aplicação verifica uma condição (ex: arquivo existe, usuário tem permissão) e depois atua sobre ela, mas entre a verificação e a ação outro processo pode alterar o estado. Um atacante explora esse intervalo para burlar controles de segurança ou acessar recursos que não deveria.

Exemplo

Um programa verifica se um arquivo é seguro para ler (if (arquivo_existe && nao_eh_symlink)), depois abre e processa. Um atacante substitui o arquivo por um symlink apontando para /etc/passwd entre a verificação e a leitura, conseguindo acessar dados sensíveis.

Como mitigar

Use operações atômicas do SO (open com flags O_NOFOLLOW, O_EXCL; fstat em vez de stat; operações que verificam e atuam em uma única chamada). Implemente locks/mutexes se lógica complexa for necessária, e valide o estado novamente após adquirir recurso.

CVE-2026-86848HIGHDpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-cryptoEPSS 0.1%CVE-2024-53289HIGHDell ThinOS version 2408 contains a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability. A low privileged attacker with local acEPSS 0.1%CVE-2025-6217LOWPEAK-System Driver PCANFD_ADD_FILTERS Time-Of-Check Time-Of-Use Information Disclosure VulnerabilityEPSS 0.1%CVE-2026-18477MEDIUMTar: tar: toctou in incremental dumpdir 'x' rename handling allows restore path escapeEPSS 0.1%CVE-2026-46227HIGHsctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALLEPSS 0.1%CVE-2026-23786LOWAn issue was discovered in DPU in Samsung Mobile Processor Exynos 1280, 2200, 1380, 1480, 2400, 1580, 2500, 1680, and 2600. A TOCTOU race coEPSS 0.1%CVE-2026-16922HIGHVulnerabilities in IBM AIX and PowerVM VIOSEPSS 0.1%CVE-2026-70597MEDIUMElectron: Parent process code-sign check is spoofableEPSS 0.1%CVE-2026-35360MEDIUMuutils coreutils touch Arbitrary File Truncation via TOCTOU Race ConditionEPSS 0.1%CVE-2026-42306HIGHMoby: Race condition in docker cp allows bind mount redirection to host pathEPSS 0.1%CVE-2026-76925MEDIUMFlatpak: flatpak: toctou race condition allows symlink redirectionEPSS 0.1%CVE-2022-39908MEDIUMTOCTOU vulnerability in Samsung decoding library for video thumbnails prior to SMR Dec-2022 Release 1 allows local attacker to perform Out-OEPSS 0.1%CVE-2026-4018MEDIUMTOCTOU race condition in the QNX Neutrino kernel impacts versions of the QNX Software Development Platform and QNX OS for SafetyEPSS 0.1%CVE-2024-24692MEDIUMZoom Rooms Client for Windows - Race ConditionEPSS 0.1%CVE-2025-20740MEDIUMIn wlan STA driver, there is a possible out of bounds read due to a race condition. This could lead to local information disclosure with UseEPSS 0.1%CVE-2026-35353LOWuutils coreutils mkdir Permission Exposure Race Condition with -mEPSS 0.1%CVE-2026-59676MEDIUMLocal File Deletion Attack Vector in rm_rf() in seunshareEPSS 0.1%CVE-2026-47497HIGHNVIDIA Virtual GPU Manager contains a vulnerability in the GPU System Processor (GSP) tracing component where a guest VM user may cause imprEPSS 0.1%CVE-2022-32638MEDIUMIn isp, there is a possible out of bounds write due to a race condition. This could lead to local escalation of privilege with System executEPSS 0.1%CVE-2025-41259HIGHSWUpdate Untrusted Script Execution via Signed Update TOCTOUEPSS 0.1%