CVE-2018-1633

IBM Informix Dynamic Server Enterprise Edition 12.1 could allow a local user logged in with...

8.2 High

IBM Informix Dynamic Server Enterprise Edition 12.1 could allow a local user logged in with database administrator user to gain root privileges through a symbolic link vulnerability in onsrvapd. IBM X-Force ID: 144434.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.42%Down 3.0 points since Apr 14, 2021

What each source reports

CVE List Score used 8.2

Record: CVE-2018-1633
CVSS 3.0: 8.2 HighCVSS:3.0/A:H/AV:L/PR:H/C:H/I:H/AC:L/S:C/UI:N/E:U/RL:O/RC:C
Updated: 2026-11-02

EUVDEUVD-2018-12212 8.2

Record: EUVD-2018-12212
CVSS 3.0: 8.2 HighCVSS:3.0/A:H/AV:L/PR:H/C:H/I:H/AC:L/S:C/UI:N/E:U/RL:O/RC:C
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jg28-cfj5-62vq 6.7

IBM Informix Dynamic Server Enterprise Edition 12.1 could allow a local user logged in with...

Record: GHSA-jg28-cfj5-62vq
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-59
Updated: 2026-11-02

NVD 6.7

Record: CVE-2018-1633
CVSS 3.1: 6.7 MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 3.0: 8.2 HighCVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0: 7.2 HighAV:L/AC:L/Au:N/C:C/I:C/A:C
Weakness: CWE-59
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-1633 is a high vulnerability (CVSS 8.2) in Ibm Informix Dynamic Server Enterprise Edition, published August 20, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.42%, the 36th percentile. No source names a fixed version.