High 7.8Published Apr 2, 2020

CVE-2019-14868In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects ksh_project ksh and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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In ksh version 20120801, a flaw was found in the way it evaluates certain environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Services and applications that allow remote unauthenticated attackers to provide one of those environment variables could allow them to exploit this issue remotely.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

ksh_project ksh ksh_project:ksh	20120801	NVD
debian debian_linux debian:debian_linux	9.0	NVD
apple mac_os_x apple:mac_os_x	before 10.15.5	NVD

References

References

http://seclists.org/fulldisclosure/2020/May/53	mailing-list, third-party-advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14868	issue-tracking, third-party-advisory
https://github.com/att/ast/commit/c7de8b641266bac7c77942239ac659edfee9ecd2	patch, third-party-advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00015.html	mailing-list, third-party-advisory
https://support.apple.com/kb/HT211170	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.