What is CVE-2009-4139?

CVE-2009-4139 is a medium-severity vulnerability in Red Hat Enterprise Linux 6, classified under Origin Validation Error. CVSS score: 6.8/10. Published 2011-07-27.

How severe is CVE-2009-4139?

Medium severity. CVSS v3 base score is 6.8 out of 10.

CSRF in Red Hat Enterprise Linux 6

CVE-2009-4139

A flaw was found in Spacewalk Java site packages. This cross-site request forgery (CSRF) vulnerability allows a remote attacker to hijack the authentication of arbitrary users. This can lead to unauthorized actions, including disabling user accounts, adding new user accounts, or escalating privileges by modifying existing user accounts to have administrator access.

Published 2011-07-27 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.4th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.4% 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

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Network Satellite Server — versions 5.3.0, 5.4.0, 5.4.1
Red Hat Spacewalk-Java — versions 1.2.39

Weakness classification (CWE)

References

securitytracker.com/id
www.redhat.com/support/errata/RHSA-2011-0879.html (Patch, Vendor Advisory)
access.redhat.com/security/cve/CVE-2009-4139 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi
exchange.xforce.ibmcloud.com/vulnerabilities/68074

Frequently asked questions

What is CVE-2009-4139?: CVE-2009-4139 is a medium-severity vulnerability in Red Hat Enterprise Linux 6, classified under Origin Validation Error. CVSS score: 6.8/10. Published 2011-07-27.
How severe is CVE-2009-4139?: Medium severity. CVSS v3 base score is 6.8 out of 10.