CVE-2017-13721
In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
Description
In X.Org Server (aka xserver and xorg-server) before 1.19.4, an attacker authenticated to an X server with the X shared memory extension enabled can cause aborts of the X server or replace shared memory segments of other X clients in the same session.
- CVSS 3.0
- 4.7 MEDIUMCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.36% probability · 29th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- x.org/x server · debian/debian linux
- Source
- cve@mitre.org
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2017/dsa-4000Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/10/04/10Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/101238Third Party Advisory, VDB Entry
- https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1Third Party Advisory
- https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlVendor Advisory
- https://security.gentoo.org/glsa/201710-30Third Party Advisory
- http://www.debian.org/security/2017/dsa-4000Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/10/04/10Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/101238Third Party Advisory, VDB Entry
- https://cgit.freedesktop.org/xorg/xserver/commit/?id=b95f25af141d33a65f6f821ea9c003f66a01e1f1Third Party Advisory
- https://lists.x.org/archives/xorg-announce/2017-October/002808.htmlVendor Advisory
- https://security.gentoo.org/glsa/201710-30Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.