Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| TianoCore | EDK2 | ≤ edk2-stable202608 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | edk2 | No fix yet | — |
| Debian 13 | edk2 | No fix yet | — |
| Debian 12 | edk2 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | edk2 +1 | No fix yet | — |
| Ubuntu 26.04 LTS | edk2 +1 | No fix yet | — |
| Ubuntu 24.04 LTS | edk2 | No fix yet | — |
| Ubuntu 22.04 LTS | edk2 | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | edk2 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | edk2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | edk2 | No fix yet | — |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | edk2-ovmf +3 | 20251114-5.el10_2.3.alma.1 | ALSA-2026:96240 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | edk2 | 20251114-5.el10_2.3 | RLSA-2026:96240 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | edk2-ovmf +3 | 20240813-315.amzn2 | ALAS2-2026-4047 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | edk2 +1 | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | edk2-ovmf +3 | 20251114-5.0.1.el10_2.3 | ELSA-2026-96240 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 3 repositories
-
Try2Take/CVE-2026-97631-PoC ★ 2 · Oct 29, 2026
An educational laboratory for studying a PXE network-boot vulnerability in EDK II / OVMF. It builds a pinned EDK II revision, boots a UEFI virtual machine in QEMU, and includes Python proof-of-concep…
-
slabbdev/uefi-pxe-cve-2026-97631 ★ 1 · Oct 28, 2026
-
RayanZiani/Bootjack ★ 0 · Oct 29, 2026
CVE-2026-97631 C
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 5
- WID-SEC-2026-4136 TianoCore EDK2 PXE Treiber: Schwachstelle ermöglicht Ausführen von beliebigem Programmcode und DoS BSI CERT-Bund (WID) · Nov 10, 2026
- ALSA-2026:96240 Critical: edk2 security update AlmaLinux Security Advisories · Nov 10, 2026
- RLSA-2026:96240 Critical: edk2 security update Rocky Linux Security Advisories · Nov 10, 2026
- ELSA-2026-96240 Critical: edk2 security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Nov 9, 2026
- ALAS2-2026-4047 Important: edk2 security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 2, 2026