CVE-2018-14600

highpriority · track · 42EPSS 0.093 · 95 %ileEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
9.34% (95th) EPSS
CVSS 7.5 · high
Is it mine?
34 products
Check your exposure
Who says so?
3 sources
cnnvd · enisa_euvd · fstec_bdu

EPSS · scored 2026-10-27

An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading to DoS or remote code execution.

01

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4
v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9
v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-787US
03

affected products (34)

Products and version ranges known to be affected.

showing 20 of 34
04

also known as (4)

Other names and identifiers for this entity.

05

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduNVDCVE.orgMITRE
published 2018-08-24modified 2026-06-17
07

references (41)

External citations — patches, advisories, analysis.

scry

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