Vulnerability · CVE-2019-9169
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regula…
Published Feb 26, 2019 · catalog updated Oct 14, 2026 · the affected product
Check if you run it
No confirmed exploitation is on record for CVE-2019-9169. EPSS is 4.73%. Act only if a listed version of the affected product is installed.
Gaps on this record
- No plain product name is stored. The page cannot tell you which product to check.
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Critical9.8
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 4.73%
- Remediation
- Advisory link
- Affected products
- cpe canonical/ubuntu linux · cpe gnu/glibc · cpe mcafee/web gateway · cpe netapp/cloud backup · cpe netapp/ontap select deploy administration utility · cpe netapp/steelstore cloud integrated storage
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
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 canonical/ubuntu linux16.04
- cpe gnu/glibcversion unspecified
- cpe mcafee/web gatewayversion unspecified
- cpe netapp/cloud backupversion unspecified
- cpe netapp/ontap select deploy administration utilityversion unspecified
- cpe netapp/steelstore cloud integrated storageversion unspecified
How to fix CVE-2019-9169
Recommended remediation
A patch or advisory reference is linked. Open the original publisher for availability by product version.
Official advisories
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-2019-9169. EPSS is 4.73%. Act only if a listed version of the affected product is installed.
Which versions are affected?
Compare what you have installed with canonical/ubuntu linux 16.04. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-125: Out-of-bounds Read. EPSS 4.73%. 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.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Feb 26, 2019 · NIST NVD
Detected
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
Oct 14, 2026 · NIST NVD
Updated
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
Sources
- CVE.orgVulnerability recordCVE-2019-9169
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2019-9169
30-day exploitation probability 4.7%
first.org - NIST NVDVulnerability recordCVE-2019-9169
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
nvd.nist.gov
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.