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TI-2019-14464 Aliases CVE-2019-20044GHSA-gwf9-995r-26hx

In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by…

Priority LOW 35CWE-273Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 20 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

In Zsh before 5.8, attackers able to execute commands can regain privileges dropped by the --no-PRIVILEGED option. Zsh fails to overwrite the saved uid, so the original privileges can be restored by executing MODULE_PATH=/dir/with/module zmodload with a module that calls setuid().

Why it matters now

EPSS 0.00495 42nd percentileScored 2026-11-07
Fix Partial Red Hat: 4 advisoriesRed Hat: 20 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 33

CPEVersionsRoleVendor
cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*before 5.8Vulnerablezsh
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*not specified by NVDRunning onApple
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*not specified by NVDRunning onLinux
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*30VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*31VulnerableFedoraproject
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*before 13.5VulnerableApple
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*before 13.5VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*before 10.15.5; 10.13.0 to before 10.13.6; 10.14.0 to before 10.14.6; 10.15 to before 10.15.5VulnerableApple
  • cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:* Versions before 5.8 Vulnerable ·zsh
  • cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Apple
  • cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Linux
  • cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* Versions before 13.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions before 13.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions before 10.15.5; 10.13.0 to before 10.13.6; 10.14.0 to before 10.14.6; 10.15 to before 10.15.5 Vulnerable ·Apple
Show 23 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:apple:mac_os_x:10.13.6:-:*:*:*:*:*:*10.13.6VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-002:*:*:*:*:*:*10.13.6 security_update_2018-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-003:*:*:*:*:*:*10.13.6 security_update_2018-003VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-001:*:*:*:*:*:*10.13.6 security_update_2019-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-002:*:*:*:*:*:*10.13.6 security_update_2019-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-003:*:*:*:*:*:*10.13.6 security_update_2019-003VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-004:*:*:*:*:*:*10.13.6 security_update_2019-004VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-005:*:*:*:*:*:*10.13.6 security_update_2019-005VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-006:*:*:*:*:*:*10.13.6 security_update_2019-006VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-007:*:*:*:*:*:*10.13.6 security_update_2019-007VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-001:*:*:*:*:*:*10.13.6 security_update_2020-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-002:*:*:*:*:*:*10.13.6 security_update_2020-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*10.14.6VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*10.14.6 security_update_2019-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*10.14.6 security_update_2019-002VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*10.14.6 security_update_2019-004VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*10.14.6 security_update_2019-005VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*10.14.6 security_update_2019-006VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*10.14.6 security_update_2019-007VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*10.14.6 security_update_2020-001VulnerableApple
cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*10.14.6 security_update_2020-002VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*before 13.4.5VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*before 6.2.5VulnerableApple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:-:*:*:*:*:*:* Versions 10.13.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-002:*:*:*:*:*:* Versions 10.13.6 security_update_2018-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-003:*:*:*:*:*:* Versions 10.13.6 security_update_2018-003 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-001:*:*:*:*:*:* Versions 10.13.6 security_update_2019-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-002:*:*:*:*:*:* Versions 10.13.6 security_update_2019-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-003:*:*:*:*:*:* Versions 10.13.6 security_update_2019-003 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-004:*:*:*:*:*:* Versions 10.13.6 security_update_2019-004 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-005:*:*:*:*:*:* Versions 10.13.6 security_update_2019-005 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-006:*:*:*:*:*:* Versions 10.13.6 security_update_2019-006 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-007:*:*:*:*:*:* Versions 10.13.6 security_update_2019-007 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-001:*:*:*:*:*:* Versions 10.13.6 security_update_2020-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-002:*:*:*:*:*:* Versions 10.13.6 security_update_2020-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:* Versions 10.14.6 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:* Versions 10.14.6 security_update_2019-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:* Versions 10.14.6 security_update_2019-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:* Versions 10.14.6 security_update_2019-004 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:* Versions 10.14.6 security_update_2019-005 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:* Versions 10.14.6 security_update_2019-006 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:* Versions 10.14.6 security_update_2019-007 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:* Versions 10.14.6 security_update_2020-001 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:* Versions 10.14.6 security_update_2020-002 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions before 13.4.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions before 6.2.5 Vulnerable ·Apple

Remediation

Red Hat 4 advisories

  • RHSA-2020:0978 Released 2020-03-26 · Red Hat rating Important
    zsh security update
    • Red Hat Enterprise Linux AppStream E4S (v. 8.0) zsh-html-5.5.1-6.el8_0.2
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) zsh-5.5.1-6.el8_0.2
  • RHSA-2020:0903 Released 2020-03-19 · Red Hat rating Important
    zsh security update
    • Red Hat Enterprise Linux AppStream (v. 8) zsh-html-5.5.1-6.el8_1.2
    • Red Hat Enterprise Linux BaseOS (v. 8) zsh-5.5.1-6.el8_1.2
  • RHSA-2020:0892 Released 2020-03-18 · Red Hat rating Important
    zsh security update
    • Red Hat Enterprise Linux Desktop (v. 6) zsh-4.3.11-11.el6_10
    • Red Hat Enterprise Linux Desktop Optional (v. 6) zsh-html-4.3.11-11.el6_10
    • Red Hat Enterprise Linux HPC Node (v. 6) zsh-4.3.11-11.el6_10
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) zsh-html-4.3.11-11.el6_10
    • Red Hat Enterprise Linux Server (v. 6) zsh-4.3.11-11.el6_10
    • Red Hat Enterprise Linux Server Optional (v. 6) zsh-html-4.3.11-11.el6_10
    • Red Hat Enterprise Linux Workstation (v. 6) zsh-4.3.11-11.el6_10
    • Red Hat Enterprise Linux Workstation Optional (v. 6) zsh-html-4.3.11-11.el6_10
Show 1 more Red Hat advisories
  • RHSA-2020:0853 Released 2020-03-17 · Red Hat rating Important
    zsh security update
    • Red Hat Enterprise Linux Client (v. 7) zsh-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux Client Optional (v. 7) zsh-html-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux ComputeNode (v. 7) zsh-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) zsh-html-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux Server (v. 7) zsh-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux Server Optional (v. 7) zsh-html-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux Workstation (v. 7) zsh-5.0.2-34.el7_7.2
    • Red Hat Enterprise Linux Workstation Optional (v. 7) zsh-html-5.0.2-34.el7_7.2

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2020:0903
Red Hat Enterprise Linux AppStream E4S (v. 8.0)Fixed RHSA-2020:0978
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:0903
Red Hat Enterprise Linux BaseOS E4S (v. 8.0)Fixed RHSA-2020:0978
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:0853
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2020:0892
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:0853

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-20044
  2. 2026-10-03 Alias added: GHSA-gwf9-995r-26hx

References

Advisory 19

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences