CVE-2026-19448
published 2026-08-20CVE-2026-19448: IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful…
PriorityP339high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.25%
16.2th percentile
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful exploitation may corrupt kernel stack state and cause a system crash, resulting in denial of service.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| ibm | aix | — | — |
| ibm | aix | — | — |
| ibm | aix | 7.2.5 – 7.2.5.212 | — |
| ibm | aix | 7.3.2 – 7.3.2.5 | — |
| ibm | aix | 7.3.3 – 7.3.3.2 | — |
| ibm | aix | 7.3.4 – 7.3.4.1 | — |
| ibm | powervm_vios | — | — |
| ibm | vios | >= 4.1.0 < 4.1.0.50 | 4.1.0.50 |
| ibm | vios | >= 4.1.1.0 < 4.1.1.30 | 4.1.1.30 |
| ibm | vios | >= 4.1.2.0 < 4.1.2.20 | 4.1.2.20 |
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VulDB
IBM AIX/PowerVM VIOS 4.1/7.2/7.3 IPsec ESP decapsulation handler stack-based overflow
vuldb·2026-08-21·CVSS 6.5
CVE-2026-19448 [MEDIUM] IBM AIX/PowerVM VIOS 4.1/7.2/7.3 IPsec ESP decapsulation handler stack-based overflow
A vulnerability, which was classified as critical, was found in IBM AIX and PowerVM VIOS 7.2/7.3/4.1. This affects an unknown part of the component IPsec ESP decapsulation handler. Executing a manipulation can lead to stack-based buffer overflow.
The identification of this vulnerability is CVE-2026-19448. The attack may be launched remotely. There is no exploit available.
GHSA
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler.
ghsa_unreviewed·2026-08-21
CVE-2026-19448 [MEDIUM] CWE-908 IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler.
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful exploitation may corrupt kernel stack state and cause a system crash, resulting in denial of service.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-20
Published