CVE-2019-16161

Name: CVE-2019-16161
Creator: NVD / NIST
Published: 2019-09-09T17:15:13.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.07%

Last modified Jun 17, 2026

CVE-2019-16161 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Onigmo through 6.2.0 has a NULL pointer dereference in onig_error_code_to_str because of fetch_token in regparse.c.. EPSS estimates a 2.07% chance of exploitation in the next 30 days.

Description

Onigmo through 6.2.0 has a NULL pointer dereference in onig_error_code_to_str because of fetch_token in regparse.c.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.07%

79.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
K-Takata	Onigmo	<= 6.2.0

References

https://github.com/k-takata/Onigmo/commit/9827d5a0298ee766f6041db9c0080166ff6cdce8Patch, Third Party Advisory
https://github.com/k-takata/Onigmo/issues/132Exploit, Third Party Advisory
https://github.com/k-takata/Onigmo/commit/9827d5a0298ee766f6041db9c0080166ff6cdce8Patch, Third Party Advisory
https://github.com/k-takata/Onigmo/issues/132Exploit, Third Party Advisory

Timeline

Published: Sep 9, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-16161?

Onigmo through 6.2.0 has a NULL pointer dereference in onig_error_code_to_str because of fetch_token in regparse.c.

How severe is CVE-2019-16161?

CVE-2019-16161 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.07% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16161?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-16161?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST