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CVE-2000-1123

18
FAUCET Score

CVE-2000-1123 describes a buffer overflow vulnerability within the pioout command in IBM AIX versions 4.3.x and earlier. This flaw could enable local users to execute arbitrary commands on the affected system. With a CVSS score of 7.2 (HIGH), it presents a significant risk, requiring local access but having low attack complexity, and potentially leading to complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.3CPE matchmatch criteria
cpe:2.3:o:ibm:aix:4.3:*:*:*:*:*:*:*
4.3.1CPE matchmatch criteria
cpe:2.3:o:ibm:aix:4.3.1:*:*:*:*:*:*:*
4.3.2CPE matchmatch criteria
cpe:2.3:o:ibm:aix:4.3.2:*:*:*:*:*:*:*
4.3.3CPE matchmatch criteria
cpe:2.3:o:ibm:aix:4.3.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

AV:L/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 54th percentile among its peer group of 3,241 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/5617
www-1.ibm.com / support/search.wss
securityfocus.com / bid/2036
PatchVendor Advisory