CVE-2026-97631: falha crítica em TianoCore EDK2
Pre-boot RCE in EDK II PXE driver
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
48Vexday Risk Score
Sem sinal de exploração. Ela tem prova de conceito pública.
ssvc Attendcvss 9.5epss 0.6%
da publicação à arma6 dias
Publicada no NVD22 de out.
1ª PoC+6d
EDK2 contains a vulnerability in BIOS where a user may cause “Out-of-bounds
Write”, Classic
Buffer Overflow, and “Incorrect Calculation of Buffer Size” by remote access. Successful exploitation of this vulnerability
can lead to arbitrary
code execution. It could also impact
Confidentiality,
Integrity,
and Availability.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Produtos afetados
TianoCore · EDK2PoCs públicas encontradas — 3
githubgithub.com/slabbdev/uefi-pxe-cve-2026-97631★ 1githubgithub.com/Try2Take/CVE-2026-97631-PoC★ 1githubgithub.com/RayanZiani/Bootjack★ 0⚠ Recursos públicos, para você avaliar a exposição de sistemas que controla ou está autorizado a testar. Teste apenas com autorização.
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Referências
https://arstechnica.com/security/2026/10/code-execution-flaw-in-uefi-firmware-threatens-most-servers-on-planet-earth/https://github.com/microsoft/mu_basecore/pull/1989https://github.com/microsoft/mu_basecore/pull/1990https://github.com/tianocore/edk2/security/advisories/GHSA-99cj-7hg9-mp4mhttps://news.ycombinator.com/item?id=50265393http://www.openwall.com/lists/oss-security/2026/10/28/4