How severe is CVE-2018-1633?

CVE-2018-1633 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1633 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1633?

CVE-2018-1633 primarily affects Ibm Informix Dynamic Server. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1633?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-1633 published?

CVE-2018-1633 was published on 2019-08-20 and last updated on 2026-06-17.

CVE-2018-1633

CVE-2018-1633 is a medium-severity vulnerability in Ibm Informix Dynamic Server with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
CVSS v2: 7.2
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Ibm Informix Dynamic Server
Published: 2019-08-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-1633?: 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.
How severe is CVE-2018-1633?: CVE-2018-1633 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1633 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1633?: CVE-2018-1633 primarily affects Ibm Informix Dynamic Server. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1633?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1633 published?: CVE-2018-1633 was published on 2019-08-20 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc1:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc10:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc11:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc12:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc2:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc3:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc4:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc5:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc6:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc7:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc8:*:*:enterprise:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:12.10:fc9:*:*:enterprise:*:*:*

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