CVE-2017-2625

16

FAUCET Score

CVE-2017-2625 describes a weak entropy vulnerability in libXdmcp versions prior to 1.1.2, affecting products like Red Hat and X.Org. A local attacker on a multi-user system could exploit this by brute-forcing session keys, potentially hijacking other users' sessions. With a CVSS score of 5.5 (MEDIUM), this vulnerability has a low attack complexity and requires local access, but could lead to high confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 1.1.2CPE matchmatch criteria	cpe:2.3:a:x.org:libxdmcp::::::::
		7.0CPE matchmatch criteria	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
		7.0CPE matchmatch criteria	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
		7.0CPE matchmatch criteria	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*
		7.4CPE matchmatch criteria	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:::::::*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

Exploitability Score

2.0

Impact Score

4.0

CvssVersion

3.0

Exploit Intelligence

EPSS Score

0.53%

Probability of exploitation in next 30 days

EPSS Percentile

41.8%

Percentile rank of EPSS score among Peer Group

As of 2026-07-25

Model: v2026.06.15

This CVE's current EPSS score of 0.0053 is in the 93rd percentile among its peer group of 15,932 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (35)

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libdrm-0:2.4.74-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libepoxy-0:1.3.1-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libevdev-0:1.5.6-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libfontenc-0:1.1.3-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libICE-0:1.0.9-9.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libinput-0:1.6.3-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libvdpau-0:1.1.1-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libwacom-0:0.24-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libX11-0:1.6.5-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXaw-0:1.0.13-4.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libxcb-0:1.12-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXcursor-0:1.1.14-8.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXdmcp-0:1.1.2-6.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXfixes-0:5.0.3-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXfont-0:1.5.2-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXfont2-0:2.0.1-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXi-0:1.7.9-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libxkbcommon-0:0.7.1-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libxkbfile-0:1.0.9-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXpm-0:3.5.12-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXrandr-0:1.5.1-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXrender-0:0.9.10-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXt-0:1.1.5-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXtst-0:1.2.3-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXv-0:1.0.11-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXvMC-0:1.0.10-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: libXxf86vm-0:1.1.4-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: mesa-0:17.0.1-6.20170307.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: mesa-private-llvm-0:3.9.1-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: vulkan-0:1.0.39.1-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: xcb-proto-0:1.12-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: xkeyboard-config-0:2.20-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: xorg-x11-proto-devel-0:7.7-20.el7

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 5Fixed in: libXdmcp

redhatend of lifevia redhat_api

Product: Red Hat Enterprise Linux 6Fixed in: libXdmcp

Vendor Advisories (1)

redhatCVE-2017-2625Moderate

libXdmcp: weak entropy usage for session keys

References

access.redhat.com / errata/RHSA-2017:1865

Third Party Advisory

bugzilla.redhat.com / show_bug.cgi

Issue TrackingThird Party Advisory

cgit.freedesktop.org / xorg/lib/libXdmcp/commit

Third Party Advisory

lists.debian.org / debian-lts-announce/2019/11/msg00024.html

security.gentoo.org / glsa/201704-03

Third Party Advisory

x41-dsec.de / lab/advisories/x41-2017-001-xorg

ExploitThird Party Advisory

securityfocus.com / bid/96480

Third Party AdvisoryVDB Entry

securitytracker.com / id/1037919

Third Party AdvisoryVDB Entry