What is CVE-2020-4799?

CVE-2020-4799 is a high-severity vulnerability in IBM Informix Dynamic Server, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-10-08.

How severe is CVE-2020-4799?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in IBM Informix Dynamic Server

CVE-2020-4799

IBM Informix spatial 14.10 could allow a local user to execute commands as a privileged user due to an out of bounds write vulnerability. IBM X-Force ID: 189460.

Vulnerability class: Buffer Overflow

Published 2020-10-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.5th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

IBM Informix Dynamic Server — versions 14.10
IBM Informix Dynamic Server — versions 14.10

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

www.ibm.com/support/pages/node/6343587 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/189460 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4799?: CVE-2020-4799 is a high-severity vulnerability in IBM Informix Dynamic Server, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2020-10-08.
How severe is CVE-2020-4799?: High severity. CVSS v3 base score is 7.8 out of 10.