CVE-2026-81858

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://www.ibm.com/support/pages/node/7290195	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:ibm:i:*:*:*:*:*:*:*:*

History

14 Oct 2026, 23:48

Type	Values Removed	Values Added
First Time		Ibm i Ibm
CPE		cpe:2.3:o:ibm:i::::::::
References	~~() https://www.ibm.com/support/pages/node/7290195 -~~	() https://www.ibm.com/support/pages/node/7290195 - Patch, Vendor Advisory

13 Oct 2026, 00:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 00:17

Updated : 2026-10-14 23:48

NVD link : CVE-2026-81858

Mitre link : CVE-2026-81858

CVE.ORG link : CVE-2026-81858

JSON object : View

Products Affected

ibm

i

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2026-81858", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-81858", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-13T13:20:42.810634Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@us.ibm.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "affected": [{"source": "psirt@us.ibm.com", "affectedData": [{"cpes": ["cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*"], "vendor": "IBM", "product": "i", "versions": [{"status": "affected", "version": "7.6"}, {"status": "affected", "version": "7.5"}, {"status": "affected", "version": "7.4"}, {"status": "affected", "version": "7.3"}]}]}], "published": "2026-10-13T00:17:01.807", "references": [{"url": "https://www.ibm.com/support/pages/node/7290195", "tags": ["Patch", "Vendor Advisory"], "source": "psirt@us.ibm.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "psirt@us.ibm.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "IBM i 7.3, 7.4, 7.5, and 7.6\u00a0could allow a remote authenticated attacker to cause a denial of service and obtain information due to an out-of-bounds read in the File Server."}], "lastModified": "2026-10-14T23:48:42.867", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:ibm:i:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D60DAD5-03DF-4682-999D-A0D0AC6DE47E", "versionEndIncluding": "7.6", "versionStartIncluding": "7.3"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@us.ibm.com"}