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Vulnerabilities

Vulnerability · CVE-2019-18276

An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11.

Published Nov 28, 2019 · catalog updated Oct 14, 2026 · An issue was discovered

Check if you run it

No confirmed exploitation is on record for CVE-2019-18276. EPSS is 2.61%. Act only if a listed version of An issue was discovered is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An issue was discovered).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.61%
Remediation
Advisory link
Affected products
cpe gnu/bash · cpe netapp/hci management node · cpe oracle/communications cloud native core policy

An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command execution in the shell can use "enable -f" for runtime loading of a new builtin, which can be a shared object that calls setuid() and therefore regains privileges. However, binaries running with an effective UID of 0 are unaffected.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe gnu/bash5.0
  • cpe netapp/hci management nodeversion unspecified
  • cpe oracle/communications cloud native core policy1.14.0

How to fix CVE-2019-18276

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2019-18276. EPSS is 2.61%. Act only if a listed version of An issue was discovered is installed.

Which versions are affected?

Compare what you have installed with oracle/communications cloud native core policy 1.14.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-273. EPSS 2.61%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 28, 2019 · NIST NVD

    Detected

    An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command executio

  2. Oct 14, 2026 · NIST NVD

    Updated

    An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux and other systems that support "saved UID" functionality, the saved UID is not dropped. An attacker with command executio

Sources

  • CVE.orgVulnerability recordCVE-2019-18276

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2019-18276

    30-day exploitation probability 2.6%

    first.org
  • NIST NVDVulnerability recordCVE-2019-18276

    An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By default, if Bash is run with its effective UID not equal to its real UID, it will drop privileges by setting its effective UID to its real UID. However, it does so incorrectly. On Linux a

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/155498/Bash-5.0-Patch-11-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.