SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2014-7187

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…

EXPLOIT ×2 ✓HIGH 10.0EPSS 60.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 60.3%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 2.0
10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
60.28% probability · 99th percentile
Public exploits
2 in Exploit-DB · verified · first 29 September 2014
CISA KEV
Not listed
Weakness
CWE-119
Affected
gnu/bash
Source
cve@mitre.org
EPSS trend
0%33%65%20 September 2026: 64.62%3 October 2026: 58.46%19 October 2026: 60.28%4 November 2026: 60.28%20 September 20264 November 2026

EPSS moved from 64.6% on 20 September 2026 to 60.3% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-34860source ↗GNU bash 4.3.11 - Environment Variable dhclientlinux · @0x00stringremote2 October 2014no
EDB-36933source ↗dhclient 4.1 - Bash Environment Variable Command Injection (Shellshock)linux · fdiskyouremote29 September 2014yes

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.