8.1

CVE-2018-16396: canonical ubuntu_linux

Modified
AliasesALPINE-CVE-2018-16396RHSA-2020:2839UBUNTU-CVE-2018-16396
Published 16-11-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-16396 is a high (CVSS 8.1) vulnerability in canonical ubuntu_linux. EPSS estimates a 7.97% chance of exploitation in the next 30 days, higher than 94.7% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 8.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 8% (FIRST, 04-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
8.1/10
010
High · v3.0 (NVD)
EPSS score
7.97%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 4
DLA-1558-1DSA-4332-1MGASA-2018-0411OPENSUSE-SU-2019:1771-1RHSA-2018:3729RHSA-2018:3730

Timeline

  1. 16-11-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint strings that result from unpacking tainted strings with some formats.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

7.97%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.97% on 05-10-2026

05-10-202604-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat17 products
  • enterprise_linuxEOL6.0 | 7.0 | 7.4 | 7.5 | 7.6
  • ruby< 0:2.0.0.648-38.el7_6
  • ruby-debuginfo< 0:2.0.0.648-38.el7_6
  • ruby-devel< 0:2.0.0.648-38.el7_6
  • ruby-doc< 0:2.0.0.648-38.el7_6
Ubuntu4 products
  • ruby1.9.1< 1.9.3.484-2ubuntu1.13
  • ruby2.0< 2.0.0.484-1ubuntu2.11
  • ruby2.3< 2.3.1-2~16.04.11
  • ruby2.5< 2.5.1-1ubuntu1.1
Alpine1 product
  • ruby≥ 2.3.0, < 2.5.2-r0 | ≥ 2.3.0, < 2.3.8-r0 | ≥ 2.3.0, < 2.4.5-r0
Canonical1 product
Debian1 product
Ruby-lang1 product
  • rubyEOL≥ 2.3.0, ≤ 2.3.7 | ≥ 2.4.0, ≤ 2.4.4 | ≥ 2.5.0, ≤ 2.5.1 | 2.6.0:preview1 | 2.6.0:preview2

6 vendors · 25 products

References

26 links
Show all 26 references