CVE-2026-16926
CVE-2026-16926 is a critical-severity vulnerability in Ibm Vios with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-73.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- EPSS exploit prediction: 1% (45th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-73
- Affected product: Ibm Vios
- Published:
- Last modified:
Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to overwrite arbitrary files due to improper neutralization of special elements in input.
Frequently asked questions
- What is CVE-2026-16926?
- IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to overwrite arbitrary files due to improper neutralization of special elements in input.
- How severe is CVE-2026-16926?
- CVE-2026-16926 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
- Is CVE-2026-16926 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-16926?
- CVE-2026-16926 primarily affects Ibm Vios. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-16926?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2026-16926 published?
- CVE-2026-16926 was published on 2026-08-20 and last updated on 2026-08-25.
References
Affected products (2)
- cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*
- cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*
More vulnerabilities in Ibm Vios
- CVE-2025-36250 — Critical (CVSS 10.0): IBM AIX 7.2, and 7.3 and IBM VIOS 3.1, and 4.1 NIM server (formerly known as NIM master) service (nimesis) could allow…
- CVE-2010-1039 — Critical (CVSS 10.0): Format string vulnerability in the _msgout function in rpc.pcnfsd in IBM AIX 6.1, 5.3, and earlier; IBM VIOS 2.1, 1.5,…
- CVE-2009-3699 — Critical (CVSS 10.0): Stack-based buffer overflow in libcsa.a (aka the calendar daemon library) in IBM AIX 5.x through 5.3.10 and 6.x through…
- CVE-2026-18835 — Critical (CVSS 9.9): IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary commands…
- CVE-2026-16816 — Critical (CVSS 9.9): IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary commands…
- CVE-2026-15068 — Critical (CVSS 9.9): IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 NIM could allow a remote authenticated attacker to execute arbitrary…
Other CWE-73 vulnerabilities
- CVE-2026-101148 — Critical (CVSS 10.0): The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key,…
- CVE-2026-20358 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Crosswork engineering team…
- CVE-2026-50148 — Critical (CVSS 10.0): Metabase is an open-source business intelligence and embedded analytics tool. From 1.54.0 until 1.54.24, 1.55.24,…
- CVE-2025-71338 — Critical (CVSS 10.0): Flowise through 2.2.7 fails to sanitize path segments in the document-store loader endpoint, allowing unauthenticated…
- CVE-2026-39907 — Critical (CVSS 10.0): Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose an unauthenticated WCF SOAP endpoint on…
- CVE-2026-27211 — Critical (CVSS 10.0): Cloud Hypervisor is a Virtual Machine Monitor for Cloud workloads. Versions 34.0 through 50.0 arevulnerable to…