CVE-2026-16849

MEDIUM
Published Aug 19, 2026 Modified Aug 24, 2026 CWE-129

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to an improper check for an array index boundary.

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CVSS v3.1 Score

4.3
MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS — Exploit Prediction

0.0020
Probability of exploitation
0.10%
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-129 CWE-129

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-2026-16849? +
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to an improper check for an array index boundary. It has a CVSS v3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2026-16849? +
CVE-2026-16849 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-16849? +
CVE-2026-16849 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-2026-16849? +
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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