SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

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.

HIGH 8.1EPSS 0.27%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1
8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS
0.27% probability · 20th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-125
Affected
ibm/i
Source
psirt@us.ibm.com
EPSS trend
0%3%5%13 October 2026: 0.41%26 October 2026: 0.27%13 October 202626 October 2026

EPSS moved from 0.4% on 13 October 2026 to 0.3% on 26 October 2026.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.