CVE Tools
Sign in

CVE-2026-8863

CVE-2026-8863

Published: Jun 9, 2026Updated: Jun 9, 2026 Sources: CVE List NVD
7.8HIGH
NVD MITRE
EPSS Score
0.1%
Top 99.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Affected Products

PC-Doctor
commercialaka pc doctor
Service Center EnterpriseMixed
Consumer Software / file-utility
Service Center Drive EraseMixed
Consumer Software / file-utility
Service Center JapanMixed
Consumer Software / file-utility
Service CenterMixed
Consumer Software / file-utility
Network Factory for Linux (Bootable Diagnostics)Mixed
Consumer Software / file-utility
Factory for Linux (Bootable Diagnostics)Mixed
Consumer Software / file-utility
Oracle Corporation
commercial·USaka oracle
OracleLinux(7.2) shimOn-premOS
Operating Systems / linux-distro
Spyrus
commercial
WTGCreatorSaaS
Consumer Software / gaming
Blancco UK
WhiteCanyon WipeDrive
baramundi software
commercial·DE
baramundi Management SuiteOn-prem
Enterprise Software / itsm-monitoring
SUSE Linux
commercial·DEaka opensuse, suse
OpenSUSE shimOn-prem
Operating Systems / linux-distro
and 2 more affected products View all →

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
Is your org exposed to CVE-2026-8863?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863
msrc.microsoft.com
https://kb.cert.org/vuls/id/616257
kb.cert.org
https://www.kb.cert.org/vuls/id/616257
kb.cert.org
News mentions
4

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-8863 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows