VulnerabilityAnalyzed

CVE-2026-16935

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a time-of-check to time-of-use (TOCTOU) race condition.

HIGH 7.0EPSS 0.07%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.07%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to gain elevated privileges due to a time-of-check to time-of-use (TOCTOU) race condition.

CVSS 3.1: 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.07% probability · 0th percentile
CISA KEV: Not listed
Weakness: CWE-367
Affected: ibm/vios · ibm/aix
Source: psirt@us.ibm.com

References

https://www.ibm.com/support/pages/node/7283858Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.