CVE-2020-4829
IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
IBM AIX 7.1, 7.2, and VIOS 3.1 could allow a local user to exploit a vulnerability in the ksu user command to gain root privileges. IBM X-Force ID: 189960.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.35% probability · 29th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- ibm/vios · ibm/aix
- Source
- psirt@us.ibm.com
EPSS 0.4% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/189960VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6380430Patch, Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/189960VDB Entry, Vendor Advisory
- https://www.ibm.com/support/pages/node/6380430Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.