Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2019-18276

CVE-2019-18276HIGH

n/a n/a — An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11.

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0261   85.1     —

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Oct 23  Reserved by mitre
  Nov 28  Published (CNA: mitre)
  Oct 14  EXPLOIT PUBLISHED — CVE-2019-18276. Public exploit reference added.

CWE-273 · CNA: mitre · CVSS v3.1 · 8 references · NVD status: Modified

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
October 23, 2019	Reserved	Reserved by mitre
November 28, 2019	Published	Published (CNA: mitre)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2019-18276. Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-273

References (8)

http://packetstormsecurity.com/files/155498/Bash-5.0-Patch-11-Privilege-Escalation.html [Exploit, Third Party Advisory, VDB Entry]
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://github.com/bminor/bash/commit/951bdaad7a18cc0dc1036bba86b18b90874d39ff [Patch, Third Party Advisory]
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://security.gentoo.org/glsa/202105-34 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20200430-0003/ [Third Party Advisory]
https://www.oracle.com/security-alerts/cpuapr2022.html [Patch, Third Party Advisory]
https://www.youtube.com/watch?v=-wGtxJ8opa8 [Exploit, Third Party Advisory]

Authoritative record: CVE-2019-18276 at cve.org

Weaknesses: CWE-273

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2019-18276 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.