CVE-2020-25697

A privilege escalation flaw was found in the Xorg-x11-server due to a lack of authentication for X11 clients. This flaw allows an attacker to take control of an X application by impersonating the server it is expecting to connect to.

• CWE-306
• CWE-306

• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1895295Issue Tracking, Third Party Advisory
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
• https://seclists.org/oss-sec/2020/q4/105Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/11/09/3Mailing List, Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1895295Issue Tracking, Third Party Advisory
• https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
• https://seclists.org/oss-sec/2020/q4/105Mailing List, Third Party Advisory

Published

May 26, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-25691A flaw was found in darkhttpd. Invalid error handling allows…7.5
• CVE-2020-25692A NULL pointer dereference was found in OpenLDAP server and …7.5
• CVE-2020-25693A flaw was found in CImg in versions prior to 2.9.3. Integer…8.1
• CVE-2020-25694A flaw was found in PostgreSQL versions before 13.1, before …8.1
• CVE-2020-25695A flaw was found in PostgreSQL versions before 13.1, before …8.8
• CVE-2020-25696A flaw was found in the psql interactive terminal of Postgre…7.5
• CVE-2020-25698Users' enrollment capabilities were not being sufficiently c…7.5
• CVE-2020-25699In moodle, insufficient capability checks could lead to user…7.5
• CVE-2020-2570Vulnerability in the MySQL Client product of Oracle MySQL (c…5.9
• CVE-2020-25700In moodle, some database module web services allowed student…6.5
• CVE-2020-25701If the upload course tool in Moodle was used to delete an en…5.3
• CVE-2020-25702In Moodle, it was possible to include JavaScript when re-nam…6.1