X.Org Xorg X11 Server vulnerabilities

2 vulnerabilities

Known vulnerabilities in X.Org Xorg X11 Server, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

7CVE-2017-2624debianxorg-server+12
EPSS score
0.70%
It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.9CVE-2026-56000chainguardxorg-server+10
EPSS score
0.31%
Local attackers with a X connection able to provide GLX commit to the X server xorg-server before 21.2.24 and xwayland before 24.1.13 could cause a Heap Use After Free, due to CommonMakeCurrent() pointing into potentially reallocated memory.