CVE-2018-1636

Name: CVE-2018-1636
Creator: NVD / NIST
Published: 2019-08-20T19:15:10.353+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.7/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2018-1636 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. Stack-based buffer overflow in oninit in IBM Informix Dynamic Server Enterprise Edition 12.1 allows an authenticated user to execute predefined code with root privileges, such as escalating to a root shell. IBM X-Force ID: 144441.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

Stack-based buffer overflow in oninit in IBM Informix Dynamic Server Enterprise Edition 12.1 allows an authenticated user to execute predefined code with root privileges, such as escalating to a root shell. IBM X-Force ID: 144441.

Metrics

CVSS 3.1

6.7/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.44%

35.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions	Update
Ibm	Informix Dynamic Server	12.10	Fc1

References

http://www.ibm.com/support/docview.wss?uid=ibm10964987Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/144441VDB Entry, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190903-0002/Third Party Advisory
http://www.ibm.com/support/docview.wss?uid=ibm10964987Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/144441VDB Entry, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190903-0002/Third Party Advisory

Timeline

Published: Aug 20, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1636?

How severe is CVE-2018-1636?

CVE-2018-1636 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1636?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1636?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST