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CVE-2019-14868

26
FAUCET Score

CVE-2019-14868 is a high-severity flaw in ksh version 20120801 that allows attackers to bypass environment restrictions and execute shell commands by manipulating specific environment variables. This vulnerability affects various products including Apple macOS and Debian Linux distributions utilizing ksh. With a CVSS score of 7.8, it presents a significant risk as it can lead to high impact on confidentiality, integrity, and availability, and can be exploited remotely by unauthenticated attackers in certain service configurations. There is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), nor is it listed on the CISA KEV catalog, suggesting no active exploitation. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
20120801CPE matchmatch criteria
cpe:2.3:a:ksh_project:ksh:20120801:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
< 10.15.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.4HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.4
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.39%
Probability of exploitation in next 30 days
EPSS Percentile
69.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0138 is in the 95th percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: ksh-0:20120801-38.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ksh-0:20120801-140.el7_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.2 Advanced Update SupportFixed in: ksh-0:20120801-26.el7_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.3 Advanced Update SupportFixed in: ksh-0:20120801-27.el7_3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: ksh-0:20120801-36.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Telco Extended Update SupportFixed in: ksh-0:20120801-36.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsFixed in: ksh-0:20120801-36.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.5 Extended Update SupportFixed in: ksh-0:20120801-138.el7_5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: ksh-0:20120801-140.el7_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ksh-0:20120801-253.el8_1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.0 Update Services for SAP SolutionsFixed in: ksh-0:20120801-253.el8_0
View patch

Vendor Advisories (1)

redhatCVE-2019-14868Important

ksh: certain environment variables interpreted as arithmetic expressions on startup, leading to code injection

Dec 13, 2019

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
seclists.org / fulldisclosure/2020/May/53
Mailing ListThird Party Advisory
github.com / att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2020/07/msg00015.html
Mailing ListThird Party Advisory
support.apple.com / kb/HT211170
Third Party Advisory