CVE-2026-81858
Ibm I: out-of-bounds read can lead to denial of service
- Risk score
- 57/100
- CVSS
- 8.1 v3.1
- Exploit chance (30 days)
- 0.5%
- Published
- 13 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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.
- Affected
- Ibm I
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Story map
At a glance
Ibm I: Amber, patch this week. IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to obtain sensitive information or execute arbitrary code on the system due to improper data sanitization by the HTTP Server Administration web application.
The flaws
- CVE-2026-81858: Out-of-bounds read can lead to denial of service (CVSS 8.1 · EPSS 0%)
- CVE-2026-96119: Code injection can lead to remote code execution (CVSS 9.9 · EPSS 1%)
- CVE-2026-84414: IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to change the ownership of… (CVSS 7.8 · EPSS 0%)
- CVE-2026-102917: Privilege escalation (CVSS 7.8 · EPSS 0%)
The fix
Fix: Apply the vendor's security update; see the linked advisory.
Who is exposed: Ibm I
Where it stands
- No known exploitation
Connects to
- Same weakness: Out-of-bounds read (CWE-125). 348 other warnings in 30 days
- Same product: Earlier Ibm I warnings. 11 in the last 90 days
Why it is Yellow
- CVSS 8.1 high
References
Original description
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.
Last activity 13 Oct 2026. Patch Forecast updates every hour.