CVE-2026-16859
CVE-2026-16859 is a medium-severity vulnerability in Ibm I with a CVSS 3.x base score of 5.3. 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-125.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (22nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- 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 obtain sensitive information due to an out-of-bounds read.
Frequently asked questions
- What is CVE-2026-16859?
- IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to obtain sensitive information due to an out-of-bounds read.
- How severe is CVE-2026-16859?
- CVE-2026-16859 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-16859 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-16859?
- CVE-2026-16859 primarily affects Ibm I. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-16859?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-16859 published?
- CVE-2026-16859 was published on 2026-08-13 and last updated on 2026-08-17.
References
Affected products (4)
- cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*
- cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
- cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
- cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
More vulnerabilities in Ibm I
- CVE-2026-16860 — Critical (CVSS 9.9): IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary code due to an…
- CVE-2026-17083 — Critical (CVSS 9.8): IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to a stack-based buffer…
- CVE-2026-17218 — Critical (CVSS 9.8): IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to execute arbitrary code due to an out-of-bounds write.
- CVE-2026-17276 — Critical (CVSS 9.6): IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to escalate privileges due to improper…
- CVE-2026-18193 — High (CVSS 8.9): IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to bypass security restrictions due to improper validation…
- CVE-2026-18099 — High (CVSS 8.9): IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary script code due to…
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