CVE-2026-16865

Q: How do I fix CVE-2026-16865?

Upgrade vios to 4.1.0.50 or later.

Q: Is CVE-2026-16865 being actively exploited?

Not that we know of. CVE-2026-16865 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 78% of all scored CVEs.

Q: How severe is CVE-2026-16865?

CVE-2026-16865 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-16865 affect?

Published advisories record a fix for vios (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGHEPSS 78th pctl

8.8

CVSS v3

NVD

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to command injection.

CWE-78OS Command Injection

How to fix

Remediation Available

viosNVD

Affected:>= 4.1.0, < 4.1.0.50Fixed in:4.1.0.50CVE-2026-16865derived from NVD

Affected:>= 4.1.1.0, < 4.1.1.30Fixed in:4.1.1.30CVE-2026-16865derived from NVD

Affected:>= 4.1.2.0, < 4.1.2.20Fixed in:4.1.2.20CVE-2026-16865derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.90%probability of exploitation in 30 days

78thpercentile

Elevated risk: more likely to be exploited than 78% of all known CVEs.

References

Patch1

ibm.com

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2024-4577	Critical	9.8	100%	KEV + Ransom	Fix

Common questions

How do I fix CVE-2026-16865?

Upgrade vios to 4.1.0.50 or later.

Is CVE-2026-16865 being actively exploited?

Not that we know of. CVE-2026-16865 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.9% is the estimated probability that it will be exploited in the next 30 days. That is higher than 78% of all scored CVEs.

How severe is CVE-2026-16865?

CVE-2026-16865 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-16865 affect?

Published advisories record a fix for vios (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-16865

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-22.