CVE-2019-17624

Name: CVE-2019-17624
Creator: NVD / NIST
Published: 2019-10-16T11:15:15.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 3.69%

Last modified Jun 17, 2026

CVE-2019-17624 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. "" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly have unspecified other impact. EPSS estimates a 3.69% chance of exploitation in the next 30 days.

Description

"" In X.Org X Server 1.20.4, there is a stack-based buffer overflow in the function XQueryKeymap. For example, by sending ct.c_char 1000 times, an attacker can cause a denial of service (application crash) or possibly have unspecified other impact. Note: It is disputed if the X.Org X Server is involved or if there is a stack overflow.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

3.69%

88.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
X.Org	X Server	<= 1.20.4

References

http://packetstormsecurity.com/files/154868/X.Org-X-Server-1.20.4-Local-Stack-Overflow.htmlThird Party Advisory
https://www.exploit-db.com/exploits/47507Exploit, Third Party Advisory, VDB Entry
https://www.x.org/releases/individual/xserver/Release Notes, Vendor Advisory
http://packetstormsecurity.com/files/154868/X.Org-X-Server-1.20.4-Local-Stack-Overflow.htmlThird Party Advisory
https://www.exploit-db.com/exploits/47507Exploit, Third Party Advisory, VDB Entry
https://www.x.org/releases/individual/xserver/Release Notes, Vendor Advisory

Timeline

Published: Oct 16, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17624?

How severe is CVE-2019-17624?

CVE-2019-17624 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.69% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17624?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17624?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST