High

CVE-2026-8863 — CVE-2026-8863

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.

Published Jun 9, 2026 · Updated Oct 13, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: certcc

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.1% (30-day exploitation probability)+0
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.11%

ahead of 1% of scored CVEs · Oct 14, 2026

Affects

Baramundi Software

baramundi Management Suite and 12 more

CVSS base

7.8

High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Baramundi Software baramundi Management Suite, Blancco UK WhiteCanyon WipeDrive, Finland Matriculation Board Abitti 1…).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Baramundi Software	baramundi Management Suite	≤ 2024R1	Vulnerable	CVE Program (cve.org) e CISA ADP
Blancco UK	WhiteCanyon WipeDrive	≥ 8.0.0 and ≤ 8.1.3	Vulnerable	CVE Program (cve.org) e CISA ADP
Finland Matriculation Board	Abitti 1	version 1.0.0	Vulnerable	CVE Program (cve.org) e CISA ADP
NTC IT ROSA LLC	RosaLinux	version R9version R10	Vulnerable	CVE Program (cve.org) e CISA ADP
Oracle	OracleLinux(7.2) shim	version 0.9	Vulnerable	CVE Program (cve.org) e CISA ADP
PC-Doctor	Factory for Linux (Bootable Diagnostics)	≥ 6.9 and ≤ 6.20.7710.267	Vulnerable	CVE Program (cve.org) e CISA ADP
PC-Doctor	Network Factory for Linux (Bootable Diagnostics)	≥ 6.9 and ≤ 6.20.7711.267	Vulnerable	CVE Program (cve.org) e CISA ADP
PC-Doctor	Service Center	≥ 14 and ≤ 17.0.7535.900	Vulnerable	CVE Program (cve.org) e CISA ADP
PC-Doctor	Service Center Drive Erase	≥ 15 and ≤ 17.0.7538.592	Vulnerable	CVE Program (cve.org) e CISA ADP
PC-Doctor	Service Center Enterprise	≥ 14 and ≤ 17.0.7536.900	Vulnerable	CVE Program (cve.org) e CISA ADP
PC-Doctor	Service Center Japan	≥ 15 and ≤ 17.0.7539.904	Vulnerable	CVE Program (cve.org) e CISA ADP
Spyrus	WTGCreator	version 4.2	Vulnerable	CVE Program (cve.org) e CISA ADP
SUSE Linux	OpenSUSE shim	version 0.9	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	CISA-ADP via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 134c704f-9b21-4f2e-91b3-4a467353bcc0)

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.11%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · oracle corporation/oraclelinux(7.2) shim, pc-doctor/service center enterprise, pc-doctor/service center drive erase, pc-
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 7.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
Jun 9, 2026 · certcc

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

3 on the record

www.kb.cert.org/vuls/id/616257
NIST National Vulnerability Database
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863
vendor-advisory, NIST National Vulnerability Database
kb.cert.org/vuls/id/616257
third-party-advisory, NIST National Vulnerability Database

Elsewhere on this site

Baramundi Software
every CVE for this vendor

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-8863 is "CVE-2026-8863", rated High. It affects baramundi Management Suite (Baramundi Software); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.8 describes technical severity. EPSS 0.11% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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