synced 13 MIN AGO
01 Record

CVE-2012-6711

A heap-based buffer overflow exists in GNU Bash before 4.3 when wide characters, not supported by the current locale set in the LC_CTYPE environment variable, are printed through the echo built-in

HighPUBLISHEDCNA: mitre
CNA base score7.0 CVSS v3.xCVSS:3.0/AC:H/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N

02 Description

A heap-based buffer overflow exists in GNU Bash before 4.3 when wide characters, not supported by the current locale set in the LC_CTYPE environment variable, are printed through the echo built-in

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
0.53% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 44.5% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-16.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2019-06-18 17:34Z7 YR AGO
Last updated
2024-08-06 21:36Z2 YR AGO
Reserved
2019-06-18
Assigning CNA
mitre
Record state
PUBLISHED
Severity
High (CVSS 7.0)
CNA CVSS vector
CVSS:3.0/AC:H/AV:L/A:H/C:H/I:H/PR:L/S:U/UI:N
Weaknesses
  • CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
  • CWE-122Heap-based Buffer OverflowVariant
Data version
5.1
Document digest
b62e32a4481956db807750dce3dcde7ce104afaa79f7396e80a8c5aa8ddb234a

05 Affected products

VendorProductVersionsPlatforms
gnubashNot specified—
redhatenterprise_linuxNot specified—

06 References

07 Fixed in

Debian 12

  • bash
    Fixed in 4.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • bash
    Fixed in 4.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • bash
    Fixed in 4.3-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.