libX11: Insufficient validation of server responses in XGetImage()
Published Dec 13, 2016
9.8
CRITICALCVSS 3.0
EPSS 4.29%
Description
The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain privileges via vectors involving image type and geometry, which triggers out-of-bounds read operations.
Affected products
No data.
Configuration 1
- 25
No data.
Red Hat Enterprise Linux 5
libX11
Will not fix
Red Hat Enterprise Linux 6
libX11
Will not fix
Red Hat Enterprise Linux 7
libX11
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libX11 | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | libX11 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | libX11 | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 1, 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 (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.29% (0.04286) | 90.80th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.32% (0.04321) | 89.88th | v5 (v2026.06.15) |
| Jun 4, 2026 | 3.16% (0.03155) | 87.15th | v4 (v2025.03.14) |
| Feb 27, 2026 | 4.71% (0.04712) | 89.17th | v4 (v2025.03.14) |
| Jul 13, 2025 | 3.16% (0.03155) | 86.34th | v4 (v2025.03.14) |
| Jun 17, 2025 | 1.94% (0.01940) | 82.53th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.14% (0.03137) | 85.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 10.39% (0.10392) | 88.60th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.14% (0.03137) | 85.99th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.84% (0.01838) | 88.77th | v3 (v2023.03.01) |
| May 25, 2024 | 1.84% (0.01838) | 88.28th | v3 (v2023.03.01) |
| Feb 5, 2024 | 1.30% (0.01304) | 84.49th | v3 (v2023.03.01) |
| Nov 8, 2023 | 0.92% (0.00923) | 81.09th | v3 (v2023.03.01) |
| Mar 19, 2023 | 0.98% (0.00977) | 81.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.96% (0.00964) | 80.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (14)
- http://www.openwall.com/lists/oss-security/2016/10/04/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2016/10/04/4 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/93363 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036945 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2016-7942 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1381859 Issue Tracking
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=8ea762f94f4c942d898fdeb590a1630c83235c17 x_refsource_CONFIRM
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMCVDXMFPXR7QGMKDG22WPPJCXH2X3L7/ vendor-advisoryx_refsource_FEDORA
- https://lists.x.org/archives/xorg-announce/2016-October/002720.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-7942
- https://security.gentoo.org/glsa/201704-03 vendor-advisoryx_refsource_GENTOO
- https://usn.ubuntu.com/3758-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/3758-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2016-7942
Change history (0)
No recorded changes yet.