CVE-2026-16919

CRITICAL
Published Aug 19, 2026 Modified Aug 21, 2026 CWE-843

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 improper validation of network-supplied pointers.

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CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0064
Probability of exploitation
0.49%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-843 CWE-843

Affected Products

Vendor Product
ibm aix
ibm aix
ibm aix
ibm aix
ibm vios
ibm vios
ibm vios

References

Frequently Asked Questions

What is CVE-2026-16919? +
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to improper validation of network-supplied pointers. It has a CVSS v3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2026-16919? +
CVE-2026-16919 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0064, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-16919? +
CVE-2026-16919 affects products from ibm, specifically: aix, vios. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-16919? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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