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Vulnerability Intelligence

CVE-2014-7187

CriticalExploitedPublic exploit

Off-by-one error in the read_token_word function in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) or possibly have unspecified other impact via deeply nested for loops, aka the…

Published Sep 28, 2014 · Updated Aug 11, 2026 · Also known as DEBIAN-CVE-2014-7187, UBUNTU-CVE-2014-7187

Key Facts

Patch immediately
  • CVE-2014-7187 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Bash (Gnu), rootio-bash, bash-doc (amazon) and 11 more products.
  • It is exploited in the wild, listed in Industry KEV feed since Mar 1, 2018. Public exploit code is available.
  • EPSS estimates a 58% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Bash 0:3.0-27.el4.4, Bash 0:3.2-33.el5_11.4, Bash 0:4.1.2-9.el6_2.2.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v2

10.0

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

58%

Higher than 99.0% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

Available

Proof-of-concept or weaponized module

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Description

Off-by-one error in the read_token_word function in parse.y in GNU Bash through 4.3 bash43-026 allows remote attackers to cause a denial of service (out-of-bounds array access and application crash) or possibly have unspecified other impact via deeply nested for loops, aka the "word_lineno" issue.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
Industry KEV feedMar 1, 2018n/aNot reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

66 affected entries in total
ProductAffected versionsFixed in
BashGnu1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5, 1.14.6, 1.14.74.3-9.2
rootio-bashrootioSee advisory4.3-9.2
bash-docamazonSee advisory4.1.2-15.21.amzn1
rhev-hypervisor6redhatSee advisory0:6.5-20140930.1.el6ev
bash-develsuseSee advisory4.4-92.1
9 more affected products in the full CVE brief

Patched Releases

Bash

0:3.0-27.el4.4, 0:3.2-33.el5_11.4, 0:4.1.2-9.el6_2.2, 0:4.2.45-5.el7_0.4, 3.2-33.el5_11.4, 4.1-3+deb6u2, 4.1.2-15.21.amzn1, 4.1.2-15.el6_5.2, 4.2.45-5.el7_0.4, 4.2+dfsg-0.1+deb7u3, 4.3-7ubuntu1.4, 4.3-9.2, 4.4-92.1

bash-devel

4.4-92.1

bash-doc

4.1.2-15.21.amzn1, 4.1.2-15.el6_5.2, 4.2.45-5.el7_0.4, 4.4-92.1

bash-lang

4.4-92.1

bash-loadables

4.4-92.1

libreadline7

7.0-92.1

libreadline7-32bit

7.0-92.1

readline-devel

7.0-92.1

readline-devel-32bit

7.0-92.1

readline-doc

7.0-92.1

rhev-hypervisor6

0:6.5-20140930.1.el6ev

rootio-bash

4.3-9.2

sles12-docker-image

1.1.4-20171002

sles12sp1-docker-image

1.0.7-20171002

Timeline

  1. Publicly disclosed

    Sep 28, 2014

  2. Added to Industry KEV feed

    Mar 1, 2018

  3. Last updated

    Aug 11, 2026

Weakness Type

  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-193 Off-by-one Error

References

15 more references in the full CVE brief

FAQ

Common Questions.

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