High Privilege escalation exploit reference

CVE-2019-18276 — An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By...

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.

Published Nov 27, 2019 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: mitre

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 2.6% (30-day exploitation probability)+13
Technical severity (high)+6
CISA SSVC: exploitation "poc"+5

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

2.61%

ahead of 85% of scored CVEs · Oct 14, 2026

Affects

Gnu

Bash and 4 more

CVSS base

7.8

High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Proof of concept

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — github.com (NIST National Vulnerability Database)
Documented patch — www.oracle.com (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Gnu Bash, Netapp Hci Management Node, Netapp Oncommand Unified Manager…).
Apply the fixed version or the patch documented under Remediation.
Search available logs for exploit probes matching the vulnerability class (privilege escalation), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Gnu	Bash	version 5.0-rc1version 5.0-patch9≤ 5.0version 5.0-beta1version 5.0-beta2version 5.0-patch1version 5.0-patch10version 5.0-patch11 and 7 more version 5.0-patch2version 5.0-patch3version 5.0-patch4version 5.0-patch5version 5.0-patch6version 5.0-patch7version 5.0-patch8	Vulnerable	NIST National Vulnerability Database
Netapp	Hci Management Node	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Netapp	Oncommand Unified Manager	≥ 9.5	Vulnerable	NIST National Vulnerability Database
Netapp	Solidfire	versions not specified by the source	Vulnerable	NIST National Vulnerability Database
Oracle	Communications Cloud Native Core Policy	version 1.14.0	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	nvd@nist.gov via NIST National Vulnerability Database
7.8	CVSS 3.1	High	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	GitHub, Inc. via GitHub Security Advisories
7.8	CVSS 3.1	High	—	—	CISA-ADP via CVE Program (cve.org) e CISA ADP
7.2	CVSS 2.0	High	3.9	10.0	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-273 · Improper Check for Dropped Privileges

Other CVEs with this weakness →

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 2.61%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
SSVC assessment updated
Oct 14, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 14, 2026
Fix documented
Oct 14, 2026 · NIST National Vulnerability Database
Affected products added · gnu/bash, netapp/hci management node, netapp/oncommand unified manager, netapp/solidfire, oracle/communications cloud na
Oct 14, 2026 · NIST National Vulnerability Database
CVSS changed · 7.8
Oct 14, 2026 · NIST National Vulnerability Database
Source status changed · → Modified
Oct 14, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 14, 2026 · Alertas do Telegram
2019
CVE published
Nov 27, 2019 · mitre

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 14, 2026 – Oct 14, 2026
1× Official description updated · Oct 14, 2026 – Oct 14, 2026

References

12 on the record

github.com/bminor/bash/commit/951bdaad7a18cc0dc1036bba86b18b90874d39ff
Patch, Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
www.oracle.com/security-alerts/cpuapr2022.html
Patch, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
github.com/advisories/GHSA-jcxc-5f87-vq5m
GitHub Security Advisories
lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772
mailing-list, x_refsource_MLIST, NIST National Vulnerability Database
www.youtube.com/watch
Exploit, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
cert-portal.siemens.com/productcert/html/ssa-398330.html
NIST National Vulnerability Database
security.netapp.com/advisory/ntap-20200430-0003
GitHub Security Advisories
packetstormsecurity.com/files/155498/Bash-5.0-Patch-11-Privilege-Escalation.html
Exploit, Third Party Advisory, VDB Entry, x_refsource_MISC, NIST National Vulnerability Database
security.gentoo.org/glsa/202105-34
Third Party Advisory, vendor-advisory, x_refsource_GENTOO, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2019-18276
GitHub Security Advisories
lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772
GitHub Security Advisories
security.netapp.com/advisory/ntap-20200430-0003/
Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database

Elsewhere on this site

Gnu
every CVE for this vendor

Privilege escalation
same class

CWE-273
other pages naming this weakness

Related CVEs (same products)

High CVE-2022-3715 A flaw was found in the bash package, where a heap-buffer overflow can occur in valid... Jan 5, 2023
Low CVE-2022-35252 When curl is used to retrieve and parse cookies from a HTTP(S) server, itaccepts cookies using... Sep 23, 2022
Critical CVE-2022-32207 When curl < 7.84.0 saves cookies, alt-svc and hsts data to local files, it makes the operation... Jul 7, 2022
Medium CVE-2022-32205 A malicious server can serve excessive amounts of `Set-Cookie:` headers in a HTTP response to... Jul 7, 2022
Medium CVE-2022-32206 curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can... Jul 7, 2022
Medium CVE-2022-32208 When curl < 7.84.0 does FTP transfers secured by krb5, it handles message verification failures... Jul 7, 2022

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2019-18276 is "An issue was discovered in disable_priv_mode in shell.c in GNU Bash through 5.0 patch 11. By...", rated High. It affects Bash (Gnu); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.8 describes technical severity. EPSS 2.61% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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