X.Org and XFree86, including libX11, xdm, xf86dga, xinit, xload, xtrans, and xterm, does not check the return values for setuid and seteuid calls when attempting to drop privileges, which might allow local users to gain privileges by causing those calls to fail, such as by exceeding a ulimit
Published Aug 30, 2006
7.2
HIGHCVSS 2.0
EPSS 0.45%
Description
X.Org and XFree86, including libX11, xdm, xf86dga, xinit, xload, xtrans, and xterm, does not check the return values for setuid and seteuid calls when attempting to drop privileges, which might allow local users to gain privileges by causing those calls to fail, such as by exceeding a ulimit.
Affected products
No data.
- 7.0_r1
- 6.7.0
- 6.8
- 6.8.1
- 6.8.2
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.0
- 1.0.2_r5
- 1.0.0
- 1.02_r5
- 214
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not Vulnerable. This issue does not exist in Red Hat Enterprise Linux 2.1 or 3. This issue not exploitable in Red Hat Enterprise Linux 4. A detailed analysis of this issue can be found in the Red Hat Bug Tracking System: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=195555
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.45% (0.00447) | 36.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00434) | 34.41th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.13% (0.00128) | 29.72th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00086) | 38.28th | v3 (v2023.03.01) |
| Jul 20, 2024 | 0.09% (0.00086) | 37.02th | v3 (v2023.03.01) |
| Jun 13, 2024 | 0.06% (0.00061) | 25.75th | v3 (v2023.03.01) |
| Jan 22, 2024 | 0.06% (0.00061) | 23.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00043) | 5.88th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
No CWE recorded.
References (20)
- http://lists.freedesktop.org/archives/xorg/2006-June/016146.html mailing-listx_refsource_MLISTPatch
- http://mail.gnome.org/archives/beast/2006-December/msg00025.html mailing-listx_refsource_MLIST
- http://secunia.com/advisories/21650 third-party-advisoryx_refsource_SECUNIAPatchVendor Advisory
- http://secunia.com/advisories/21660 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/21693 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/22332 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25032 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/25059 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200608-25.xml vendor-advisoryx_refsource_GENTOOPatchVendor Advisory
- http://security.gentoo.org/glsa/glsa-200704-22.xml vendor-advisoryx_refsource_GENTOO
- http://www.debian.org/security/2006/dsa-1193 vendor-advisoryx_refsource_DEBIAN
- http://www.kb.cert.org/vuls/id/300368 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.mandriva.com/security/advisories?name=MDKSA-2006:160 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/19742 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/23697 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2006/3409 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2007/0409 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2006-4447 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2006-4447
- https://www.cve.org/CVERecord?id=CVE-2006-4447
Change history (0)
No recorded changes yet.