What is CVE-2020-4809?

CVE-2020-4809 is a low-severity vulnerability in IBM Edge, classified under CWE-922. CVSS score: 3.3/10. Published 2021-09-23.

How severe is CVE-2020-4809?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in IBM Edge

CVE-2020-4809

IBM Edge 4.2 allows web pages to be stored locally which can be read by another user on the system. IBM X-Force ID: 189633.

Published 2021-09-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

IBM Edge — versions 4.2
IBM Edge Application Manager — versions 4.2

Weakness classification (CWE)

CWE-922

References

www.ibm.com/support/pages/node/6491631 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/189633 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4809?: CVE-2020-4809 is a low-severity vulnerability in IBM Edge, classified under CWE-922. CVSS score: 3.3/10. Published 2021-09-23.
How severe is CVE-2020-4809?: Low severity. CVSS v3 base score is 3.3 out of 10.