Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Oracle Corporation / OracleLinux(7.2) shim | affected 0.9 |
| PC-Doctor / Service Center Enterprise | affected 14 through 17.0.7536.900 |
| PC-Doctor / Service Center Drive Erase | affected 15 through 17.0.7538.592 |
| PC-Doctor / Service Center Japan | affected 15 through 17.0.7539.904 |
| PC-Doctor / Service Center | affected 14 through 17.0.7535.900 |
| PC-Doctor / Network Factory for Linux (Bootable Diagnostics) | affected 6.9 through 6.20.7711.267 |
| PC-Doctor / Factory for Linux (Bootable Diagnostics) | affected 6.9 through 6.20.7710.267 |
| Spyrus / WTGCreator | affected 4.2 |
| Blancco UK / WhiteCanyon WipeDrive | affected 8.0.0 through 8.1.3 |
| baramundi software / baramundi Management Suite | affected * through 2024R1 |
| SUSE Linux / OpenSUSE shim | affected 0.9 |
| Finland Matriculation Board / Abitti 1 | affected 1.0.0 |
| NTC IT ROSA LLC / RosaLinux | affected R9 |
| NTC IT ROSA LLC / RosaLinux | affected R10 |
CWE
No CWE identifiers supplied.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863
- https://kb.cert.org/vuls/id/616257
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.