HOMEVULNERABILITIESCVE-2018-11236
CRITICAL

CVE-2018-11236

CWE-190Published: May 18, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

stdlib/canonicalize.c in the GNU C Library (aka glibc or libc6) 2.27 and earlier, when processing very long pathname arguments to the realpath function, could encounter an integer overflow on 32-bit architectures, leading to a stack-based buffer overflow and, potentially, arbitrary code execution.

NVD Source

Technical Analysis

CVE-2018-11236 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

gnu1 product(s)
glibc
netapp2 product(s)
data ontap edgeelement software management
Oracle2 product(s)
communications session border controllerenterprise communications broker
Red Hat4 product(s)
virtualization hostenterprise linux desktopenterprise linux serverenterprise linux workstation
Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://access.redhat.com/errata/RHSA-2018:3092
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
PATCHhttps://access.redhat.com/errata/RHSA-2018:3092
PATCHhttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
ADVISORYhttp://www.securityfocus.com/bid/104255
ADVISORYhttps://access.redhat.com/errata/RHBA-2019:0327
ADVISORYhttps://security.netapp.com/advisory/ntap-20190401-0001/
ADVISORYhttps://sourceware.org/bugzilla/show_bug.cgi?id=22786
ADVISORYhttp://www.securityfocus.com/bid/104255
ADVISORYhttps://access.redhat.com/errata/RHBA-2019:0327
ADVISORYhttps://security.netapp.com/advisory/ntap-20190401-0001/
ADVISORYhttps://sourceware.org/bugzilla/show_bug.cgi?id=22786

All References (18)

→
http://www.securityfocus.com/bid/104255Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHBA-2019:0327Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2018:3092Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20190329-0001/Broken Link
→
https://security.netapp.com/advisory/ntap-20190401-0001/Third Party Advisory
→
https://sourceware.org/bugzilla/show_bug.cgi?id=22786Issue Tracking · Third Party Advisory
→
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=5460617d1567657621107d895ee2dd83bc1f88f2
→
https://usn.ubuntu.com/4416-1/
→
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch · Third Party Advisory
→
http://www.securityfocus.com/bid/104255Third Party Advisory · VDB Entry
→
https://access.redhat.com/errata/RHBA-2019:0327Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2018:3092Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20190329-0001/Broken Link
→
https://security.netapp.com/advisory/ntap-20190401-0001/Third Party Advisory
→
https://sourceware.org/bugzilla/show_bug.cgi?id=22786Issue Tracking · Third Party Advisory

Quick Facts

CVE IDCVE-2018-11236
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-190
CISA KEVNo
Affected4 vendor(s)
PublishedMay 18, 2018

Related CVEs (CWE-190)

CVE-2012-5143
10.0
CVE-2015-5108
10.0
CVE-2010-1233
10.0
CVE-2012-5835
10.0
CVE-2015-5097
10.0
CVE-2013-2555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-11236 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2018-11236·NVD