What is CVE-2020-4259?

CVE-2020-4259 is a medium-severity vulnerability in HP Hp-Ux, classified under Incorrect Default Permissions. CVSS score: 6.5/10. Published 2020-05-14.

How severe is CVE-2020-4259?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in HP Hp-Ux

CVE-2020-4259

IBM Sterling File Gateway 2.2.0.0 through 6.0.3.1 could allow an authenticated user could manipulate cookie information and remove or add modules from the cookie to access functionality not authorized to. IBM X-Force ID: 175638.

Published 2020-05-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.6th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

HP Hp-Ux
IBM Aix
IBM I
IBM Sterling File Gateway — versions 2.2.0.0, 6.0.3.1
IBM Sterling File Gateway
Linux Kernel
Microsoft Windows
Oracle Solaris

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.ibm.com/support/pages/node/6208038 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/175638 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4259?: CVE-2020-4259 is a medium-severity vulnerability in HP Hp-Ux, classified under Incorrect Default Permissions. CVSS score: 6.5/10. Published 2020-05-14.
How severe is CVE-2020-4259?: Medium severity. CVSS v3 base score is 6.5 out of 10.