SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-1999-0122

Buffer overflow in AIX lchangelv gives root access.

EXPLOIT ✓HIGH 7.2EPSS 1.09%

Does this matter?

A public exploit is published in Exploit-DB (verified) and the impact is high, while EPSS rates exploitation at 1.1%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.

Description

Buffer overflow in AIX lchangelv gives root access.

CVSS 2.0
7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS
1.09% probability · 65th percentile
Public exploits
1 in Exploit-DB · verified · first 21 July 1997
CISA KEV
Not listed
Affected
ibm/aix
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.09%26 October 202626 October 2026

EPSS 1.1% 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.

Public exploits (1)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-19309source ↗IBM AIX 4.2 - '/usr/sbin/lchangelv' Local Buffer Overflowaix · Bryan P. Selflocal21 July 1997yes

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