CVE-2019-16162

Name: CVE-2019-16162
Creator: NVD / NIST
Published: 2019-09-09T17:15:13.253+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.80%

Last modified Jun 17, 2026

CVE-2019-16162 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Onigmo through 6.2.0 has an out-of-bounds read in parse_char_class because of missing codepoint validation in regenc.c.. EPSS estimates a 1.80% chance of exploitation in the next 30 days.

Description

Onigmo through 6.2.0 has an out-of-bounds read in parse_char_class because of missing codepoint validation in regenc.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

1.80%

75.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

Affected Software

Vendor	Product	Versions
K-Takata	Onigmo	<= 6.2.0

References

https://github.com/k-takata/Onigmo/issues/139Exploit, Third Party Advisory
https://github.com/k-takata/Onigmo/issues/139Exploit, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-16162?

Onigmo through 6.2.0 has an out-of-bounds read in parse_char_class because of missing codepoint validation in regenc.c.

How severe is CVE-2019-16162?

CVE-2019-16162 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.80% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16162?

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-2019-16162?

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

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Source: NVD / NIST