IBM Patches 191 Vulnerabilities in AIX and PowerVM VIOS Including Critical Remote Command Execution Flaws

IBM disclosed a large set of security vulnerabilities affecting its UNIX-based AIX operating system and the PowerVM VIOS virtualization component. The company addressed a total of 191 CVEs through multiple updated releases for both products. Thirty-five of the issues received CVSS base scores of 9.0 or higher, with three OS command injection vulnerabilities rated at 9.9 that allow remote attackers to execute commands with low privileges. IBM provided specific Technology Level and Service Pack updates for AIX 7.3 and 7.2 branches along with corresponding fixes for PowerVM VIOS versions 4.1.x. The advisory covers both IBM-developed code and third-party software components integrated into the platforms. All listed CVEs are now resolved in the recommended maintenance levels released on August 15.

Security NEXTAugust 24, 2026Translated from Japanese

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IBM has released security updates to address a large number of vulnerabilities in its AIX UNIX operating system and the PowerVM VIOS virtual I/O server. The issues were detailed in an advisory published on August 15 and include both internally developed code and third-party components.

In total, the company resolved 191 CVEs. According to the Common Vulnerability Scoring System, 35 vulnerabilities carry base scores of 9.0 or higher. Three OS command injection flaws stand out with a score of 9.9: CVE-2026-18835, CVE-2026-16816, and CVE-2026-15068. An additional 23 issues received a score of 9.8.

Affected Products and Fixes

The following AIX releases contain the fixes:

AIX 7.3 TL04 SP2
AIX 7.3 TL03 SP3
AIX 7.3 TL02 SP5
AIX 7.2 TL05 SP13

For PowerVM VIOS, IBM released versions 4.1.2.20, 4.1.1.30, and 4.1.0.50.

Full List of Addressed CVEs

The complete list of resolved vulnerabilities includes:

CVE-2025-12817, CVE-2025-12818, CVE-2025-15649, CVE-2026-2003 through CVE-2026-2006, CVE-2026-6472 through CVE-2026-6475, CVE-2026-6477, CVE-2026-6478, CVE-2026-6637, CVE-2026-8368, CVE-2026-8400, CVE-2026-8829, CVE-2026-12087, CVE-2026-14970, CVE-2026-15061, CVE-2026-15065, CVE-2026-15068, CVE-2026-15078, CVE-2026-16243, CVE-2026-16439, CVE-2026-16441, CVE-2026-16656, CVE-2026-16686, CVE-2026-16690, CVE-2026-16703, CVE-2026-16706, CVE-2026-16814, CVE-2026-16816 through CVE-2026-16819, CVE-2026-16821 through CVE-2026-16825, CVE-2026-16827, CVE-2026-16829, CVE-2026-16831, CVE-2026-16833, CVE-2026-16834, CVE-2026-16836 through CVE-2026-16842, CVE-2026-16844 through CVE-2026-16852, CVE-2026-16855, CVE-2026-16857, CVE-2026-16862, CVE-2026-16864 through CVE-2026-16866, CVE-2026-16869, CVE-2026-16872 through CVE-2026-16875, CVE-2026-16877, CVE-2026-16882, CVE-2026-16883, CVE-2026-16885, CVE-2026-16886, CVE-2026-16888, CVE-2026-16890, CVE-2026-16891, CVE-2026-16894, CVE-2026-16897, CVE-2026-16901, CVE-2026-16903, CVE-2026-16909, CVE-2026-16911, CVE-2026-16913, CVE-2026-16914, CVE-2026-16917, CVE-2026-16919, CVE-2026-16922 through CVE-2026-16928, CVE-2026-16932, CVE-2026-16934 through CVE-2026-16937, CVE-2026-16943 through CVE-2026-16946, CVE-2026-16951, CVE-2026-16952, CVE-2026-16958, CVE-2026-16964, CVE-2026-16972, CVE-2026-16973, CVE-2026-16980, CVE-2026-16989, CVE-2026-16991, CVE-2026-16996, CVE-2026-16997, CVE-2026-17000, CVE-2026-17003, CVE-2026-17006, CVE-2026-17007, CVE-2026-17009, CVE-2026-17024, CVE-2026-17040, CVE-2026-17060, CVE-2026-17118, CVE-2026-17120 through CVE-2026-17122, CVE-2026-17124, CVE-2026-17136, CVE-2026-17138, CVE-2026-17141, CVE-2026-17142, CVE-2026-17145, CVE-2026-17152, CVE-2026-17157, CVE-2026-17159, CVE-2026-17160, CVE-2026-17163, CVE-2026-17165, CVE-2026-17168, CVE-2026-17170, CVE-2026-17171, CVE-2026-17195, CVE-2026-17422 through CVE-2026-17425, CVE-2026-17436, CVE-2026-18670, CVE-2026-18716, CVE-2026-18822, CVE-2026-18824, CVE-2026-18828, CVE-2026-18832, CVE-2026-18835, CVE-2026-18840, CVE-2026-18842, CVE-2026-19437, CVE-2026-19442, CVE-2026-19446, CVE-2026-19448, CVE-2026-19449, CVE-2026-19653, CVE-2026-19783, CVE-2026-22007, CVE-2026-22013, CVE-2026-22016, CVE-2026-22018, CVE-2026-22021, CVE-2026-34268, CVE-2026-41254, CVE-2026-46968, CVE-2026-47010, CVE-2026-47021, CVE-2026-47027, CVE-2026-47057 through CVE-2026-47059, CVE-2026-47063, CVE-2026-48959, CVE-2026-48962, CVE-2026-59995 through CVE-2026-59997, CVE-2026-59999 through CVE-2026-60002, CVE-2026-60147

Administrators are advised to apply the listed updates as soon as possible to mitigate the highest-risk issues.

IBM AIX PowerVM VIOS CVE-2026-18835 CVE-2026-16816 CVE-2026-15068 CVSS base score

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