Is CVE-2015-0255 in the CISA KEV catalog?

No. CVE-2015-0255 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-0255?

CVE-2015-0255 has a CVSS v2 base score of 6.4 (MEDIUM).

What is the EPSS score for CVE-2015-0255?

CVE-2015-0255 has an EPSS score of 4.50% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-0255?

Upgrade xorg-server on debian 11 to 2:1.16.4-1 or later. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2015-0255

MEDIUMEPSS 90th pctl

6.4

CVSS v2

NVD

Description

X.Org Server (aka xserver and xorg-server) before 1.16.3 and 1.17.x before 1.17.1 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (crash) via a crafted string length value in a XkbSetGeometry request.

CWE-200Information Exposure

How to fix

Remediation Available

xorg-serverDebian

Fixed in:2:1.16.4-1CVE-2015-0255

vnc4Ubuntu

Fixed in:4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1USN-4772-1

Fixed in:4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1USN-4772-1

vnc4serverUbuntu

Fixed in:4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1USN-4772-1

Fixed in:4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1USN-4772-1

xorg-serverUbuntu

Fixed in:2:1.15.1-0ubuntu2.7USN-2500-1

xorg-server-lts-utopicUbuntu

Fixed in:2:1.16.0-1ubuntu1.2~trusty2USN-2500-1

xserver-xorg-coreUbuntu

Fixed in:2:1.15.1-0ubuntu2.7USN-2500-1

xserver-xorg-core-lts-utopicUbuntu

Fixed in:2:1.16.0-1ubuntu1.2~trusty2USN-2500-1

xvnc4viewerUbuntu

Fixed in:4.1.1+xorg4.3.0-37ubuntu5.0.2+esm1USN-4772-1

Fixed in:4.1.1+xorg4.3.0-37.3ubuntu2.1+esm1USN-4772-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.50%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Patch1

x.org

Other references12

Related Vulnerabilities

Other CWE-200 (Information Exposure) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-24919	High	8.6	100%	KEV + Ransom	-
CVE-2020-14181	Medium	5.3	100%	-	Fix
CVE-2021-34429	Medium	5.3	99%	-	Fix
CVE-2018-11409	Medium	5.3	98%	-	-
CVE-2021-41277	Critical	10.0	97%	KEV	-
CVE-2016-2183	High	7.5	96%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.