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CVE-2020-25697

23
FAUCET Score

CVE-2020-25697 is a privilege escalation flaw in the Xorg-x11-server, allowing an attacker to impersonate an X11 server and take control of an X application due to a lack of authentication for clients. With a CVSS score of 7.0 (HIGH), this vulnerability requires local access and high attack complexity, but can lead to full compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:x.org:x_server:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.0HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.0
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.33%
Probability of exploitation in next 30 days
EPSS Percentile
25.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0033 is in the 62nd percentile among its peer group of 1,525 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.4 InfoSec Media, 0.1 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: xorg-x11-server
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: xorg-x11-server

Vendor Advisories (1)

redhatCVE-2020-25697Moderate

xorg-x11-server: local privilege escalation

Nov 9, 2020

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
lists.apache.org / thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
seclists.org / oss-sec/2020/q4/105
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2020/11/09/3
Mailing ListThird Party Advisory