CVE-2026-18858
CVE-2026-18858 is a low-severity vulnerability in Ibm I with a CVSS 3.x base score of 3.3. 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-267.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- EPSS exploit prediction: 0% (1st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-267
- Affected product: Ibm I
- Published:
- Last modified:
Description
IBM i 7.6, and 7.5 could allow a local authenticated attacker to obtain information from a privileged file when using SSH.
Frequently asked questions
- What is CVE-2026-18858?
- IBM i 7.6, and 7.5 could allow a local authenticated attacker to obtain information from a privileged file when using SSH.
- How severe is CVE-2026-18858?
- CVE-2026-18858 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-18858 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-18858?
- CVE-2026-18858 primarily affects Ibm I. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-18858?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-18858 published?
- CVE-2026-18858 was published on 2026-09-04 and last updated on 2026-09-08.
References
Affected products (2)
- cpe:2.3:o:ibm:i:7.5:*:*:*:*:*:*:*
- cpe:2.3:o: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…
Other CWE-267 vulnerabilities
- CVE-2023-22647 — Critical (CVSS 9.9): An Improper Privilege Management vulnerability in SUSE Rancher allowed standard users to leverage their existing…
- CVE-2026-29646 — Critical (CVSS 9.8): In OpenXiangShan NEMU prior to 55295c4, when running with RVH (Hypervisor extension) enabled, a VS-mode guest write to…
- CVE-2026-96659 — Critical (CVSS 9.1): A flaw was found in Foreman. This vulnerability allows an authenticated user with low-level Viewer permissions to cause…
- CVE-2021-44547 — Critical (CVSS 9.1): A sandboxing issue in Odoo Community 15.0 and Odoo Enterprise 15.0 allows authenticated administrators to executed…
- CVE-2026-10090 — Critical (CVSS 9.0): A flaw was found in the Application Subscription controller (multicluster-operators-subscription) of Red Hat Advanced…
- CVE-2026-18951 — High (CVSS 8.8): A flaw was found in the Red Hat OpenShift AI (RHOAI) overlay for the training operator. The RHOAI overlay incorrectly…