Fallos del tipo CWE-416

5036 resultados

Uso após liberação de memória

Ocorre quando o código tenta acessar uma área de memória que já foi liberada (deallocated). O programa continua usando um ponteiro que aponta para um endereço inválido, causando leitura/escrita em memória não controlada. Isso pode levar a crash, corrupção de dados ou execução arbitrária de código.

Ejemplo

Um navegador aloca memória para um objeto DOM, depois o remove da página e libera a memória. Se um script JavaScript ainda tentar acessar esse objeto deletado, o navegador tenta ler/escrever em um endereço que agora contém outro dado, causando comportamento impredizível ou exploração por atacante.

Cómo mitigar

Use linguagens com garbage collection (Java, Python, C#) ou práticas rigorosas: null os ponteiros após free(), use smart pointers (C++), evite compartilhamento de referências sem sincronização, faça testes de memória com ferramentas como Valgrind ou AddressSanitizer.

CVE-2021-28631HIGHAdobe Acrobat Reader DC AcroForm Field Use-After-Free Remote Code Execution VulnerabilityEPSS 4.7%CVE-2021-28552HIGHAdobe Acrobat Reader DC XFA Template Use-After-Free Remote Code Execution VulnerabilityEPSS 4.7%CVE-2021-40420HIGHA use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 11.1.0.52543. A specially-crafted PDFEPSS 4.7%CVE-2018-16841MEDIUMSamba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-EPSS 4.6%CVE-2018-17679—This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. User interactioEPSS 4.6%CVE-2024-41830HIGHTalos Security Advisory for Adobe (TALOS-2024-2009)EPSS 4.5%CVE-2024-30032HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 4.5%CVE-2023-0215HIGHUse-after-free following BIO_new_NDEFEPSS 4.5%CVE-2021-30661HIGHA use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14EPSS 4.5%KEVCVE-2026-24289HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 4.5%CVE-2022-34233MEDIUMAdobe Acrobat Reader DC Doc print Use-After-Free Information Disclosure VulnerabilityEPSS 4.5%CVE-2025-50177HIGHMicrosoft Message Queuing (MSMQ) Remote Code Execution VulnerabilityEPSS 4.4%CVE-2019-18197HIGHIn xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area haEPSS 4.4%CVE-2021-28641HIGHAdobe Acrobat Reader Use-After-Free Arbitrary Code Execution VulnerabilityEPSS 4.3%CVE-2022-34220HIGHAcrobat Reader DC Font Parsing Use-After-Free Remote Code Execution VulnerabilityEPSS 4.3%CVE-2019-6769HIGHThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.4.1.16828. User interactiEPSS 4.3%CVE-2024-30284HIGHZDI-CAN-23466: Adobe Acrobat Reader DC Annotation Use-After-Free Remote Code Execution VulnerabilityEPSS 4.3%CVE-2026-2313HIGHUse after free in CSS in Google Chrome prior to 145.0.7632.45 allowed a remote attacker to potentially exploit heap corruption via a craftedEPSS 4.3%CVE-2019-6775HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 9.5.0.20723. User interactionEPSS 4.2%CVE-2019-6774HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 9.4.1.16828. User interactionEPSS 4.2%