CVE-2026-17271
CVE-2026-17271 is a high-severity vulnerability in Ibm I with a CVSS 3.x base score of 7.5. 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-770.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-770
- Affected product: Ibm I
- Published:
- Last modified:
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper validation of input size.
Frequently asked questions
- What is CVE-2026-17271?
- IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper validation of input size.
- How severe is CVE-2026-17271?
- CVE-2026-17271 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-17271 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-17271?
- CVE-2026-17271 affects Ibm I. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-17271?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-17271 published?
- CVE-2026-17271 was published on 2026-08-12 and last updated on 2026-08-17.
References
Affected products (1)
- cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*
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