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High · 7.8 Public exploit CVE-2026-8863 EUVD-2026-35791GHSA-4hqv-6cp5-4rq9

CVE-2026-8863

Published Jun 9, 2026 · Updated Jun 10, 2026 · Assigned by certcc

Vendor: baramundi software Vendor: Blancco UK Vendor: Finland Matriculation Board Vendor: NTC IT ROSA Vendor: Oracle Vendor: PC-Doctor Vendor: Spyrus Vendor: SUSE Linux Product: Abitti 1 Product: baramundi Management Suite Product: Factory for Linux (Bootable Diagnostics) Product: Network Factory for Linux (Bootable Diagnostics) Product: OpenSUSE shim Product: OracleLinux(7.2) shim Product: RosaLinux Product: Service Center Product: Service Center Drive Erase Product: Service Center Enterprise Product: Service Center Japan Product: WhiteCanyon WipeDrive Product: WTGCreator Platform: Linux

Description

Multiple Microsoft-sigend UEFI SHIM bootloaders are vulnerable to SecureBoot bypass. An attacker with administrative privileges or the ability to modify the boot process could use one of the vulnerable shim bootloaders to bypass Secure Boot protections and execute arbitrary code before the operating system loads. Specific UEFI DBX update is required to block these vulnerable boot loaders.

Affected products

VendorProductAffectedFixed
Oracle OracleLinux(7.2) shim 0.9 —
PC-Doctor Service Center Enterprise 14 – ≤ 17.0.7536.900 —
PC-Doctor Service Center Drive Erase 15 – ≤ 17.0.7538.592 —
PC-Doctor Service Center Japan 15 – ≤ 17.0.7539.904 —
PC-Doctor Service Center 14 – ≤ 17.0.7535.900 —
PC-Doctor Network Factory for Linux (Bootable Diagnostics) 6.9 – ≤ 6.20.7711.267 —
PC-Doctor Factory for Linux (Bootable Diagnostics) 6.9 – ≤ 6.20.7710.267 —
Spyrus WTGCreator 4.2 —
Blancco UK WhiteCanyon WipeDrive 8.0.0 – ≤ 8.1.3 —
baramundi software baramundi Management Suite ≤ 2024R1 —
SUSE Linux OpenSUSE shim 0.9 —
Finland Matriculation Board Abitti 1 1.0.0 —
NTC IT ROSA RosaLinux R9, R10 —

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.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • 0xbekoo/CVE-2026-8863 ★ 2 · Jul 21, 2026

    Hashes and shim versions for the UEFI Secure Boot shims affected by CVE-2026-8863

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References