Weaknesses of type CWE-416

5,110 results

Uso após liberação de memória

Ocorre quando o código tenta acessar um bloco de memória que já foi desalocado (free/delete). O ponteiro continua apontando para aquele endereço, mas o dado ali pode ter sido sobrescrito por outra operação, causando comportamento impredizível, corrupção de dados ou execução de código arbitrário.

Example

Um buffer é alocado, depois liberado com free(). Mais adiante, o código ainda tenta ler ou escrever naquele mesmo ponteiro sem verificar. Se um atacante controlar a alocação subsequente daquele endereço, consegue manipular o conteúdo que será lido.

How to mitigate

Anule o ponteiro imediatamente após liberar (ptr = NULL), implemente análise estática para detectar acessos pós-liberação, use ferramentas como valgrind ou AddressSanitizer nos testes, e considere linguagens com gerenciamento automático de memória para código sensível.

CVE-2026-26330MEDIUMEnvoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directlyEPSS 0.4%CVE-2024-9712HIGHTrimble SketchUp SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-9723HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2023-26605HIGHIn the Linux kernel 6.0.8, there is a use-after-free in inode_cgwb_move_to_attached in fs/fs-writeback.c, related to __list_del_entry_valid.EPSS 0.4%CVE-2024-9721HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-9713HIGHTrimble SketchUp Pro SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2024-9714HIGHTrimble SketchUp Viewer SKP File Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 0.4%CVE-2026-15773CRITICALUse after free in Core in Google Chrome on Windows prior to 150.0.7871.125 allowed a remote attacker to potentially perform a sandbox escapeEPSS 0.4%CVE-2024-20792HIGHAdobe Illustrator TIF File Parsing Use-After-Free Remote memory corruptionEPSS 0.4%CVE-2026-43740MEDIUMThe issue was addressed with improved memory handling. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.EPSS 0.4%CVE-2024-43703HIGHGPU DDK - Duplicate calls to RGXCreateFreeList on the same reservation leads to GPU UAFEPSS 0.4%CVE-2025-21967HIGHksmbd: fix use-after-free in ksmbd_free_work_structEPSS 0.4%CVE-2026-17729HIGHUse after free in V8 in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentialEPSS 0.4%CVE-2023-26226HIGHA use after free memory corruption issue exists in Yandex Browser for Desktop prior to version 24.4.0.682EPSS 0.4%CVE-2025-62170HIGHrAthena map-server use-after-free vulnerability in RODEXEPSS 0.4%CVE-2026-43709MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, maEPSS 0.4%CVE-2026-43717MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%CVE-2022-1205—A NULL pointer dereference flaw was found in the Linux kernel’s Amateur Radio AX.25 protocol functionality in the way a user connects with tEPSS 0.4%CVE-2026-10640MEDIUMUse-after-free reading `net_pkt` `iface` after send in IPv6 Neighbor Discovery (`ipv6_nbr.c`)EPSS 0.4%CVE-2026-43727MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.4%