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CVE-2026-19783— Vulnerabilities in IBM AIX and PowerVM VIOS

Quick assessment

Affected
IBM AIX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM AIX是美国IBM公司的一款企业级Unix操作系统。 IBM AIX 7.2版本和7.3版本以及IBM PowerVM VIOS 4.1版本存在缓冲区错误漏洞，该漏洞源于验证不足，特制的文件系统映像可在目录读取期间触发越界内核栈写入，导致系统崩溃或可能实现权限提升。

CVSS 6.7 · Medium EPSS 0.11% · P1

Affected Version Matrix 3

VendorProduct Version RangeStatus
IBM AIX 7.2 affected
7.3 affected
IBM PowerVM VIOS 4.1 affected
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I. Basic Information for CVE-2026-19783

Vulnerability Information
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Vulnerability Title
Vulnerabilities in IBM AIX and PowerVM VIOS
Source: CVE Program / CVE List V5
Vulnerability Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause kernel memory corruption due to insufficient validation. A crafted filesystem image can trigger an out-of-bounds kernel-stack write during directory reads, causing a system crash or potentially enabling privilege escalation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
IBM AIX 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IBM AIX是美国IBM公司的一款企业级Unix操作系统。 IBM AIX 7.2版本和7.3版本以及IBM PowerVM VIOS 4.1版本存在缓冲区错误漏洞，该漏洞源于验证不足，特制的文件系统映像可在目录读取期间触发越界内核栈写入，导致系统崩溃或可能实现权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM AIX 7.2 cpe:2.3:a:ibm:aix:7.2:*:*:*:*:*:*:*
IBM PowerVM VIOS 4.1 cpe:2.3:a:ibm:powervm_vios:4.1:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19783

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III. Intelligence Information for CVE-2026-19783

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Other References for CVE-2026-19783 (1)

Same Patch Batch · IBM · 2026-08-20 · 75 CVEs total

CVE-2026-18835 9.9 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17160 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17040 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17118 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17122 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17136 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17141 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17142 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17145 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17152 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17157 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17422 9.3 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16926 9.1 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-19449 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16996 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17436 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-18832 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16932 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16936 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16934 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS

Showing top 20 of 75 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: AIX
Same vendor: IBM
Same weakness: CWE-787

V. Comments for CVE-2026-19783

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