CVE-2019-16163

Name: CVE-2019-16163
Creator: NVD / NIST
Published: 2019-09-09T17:15:13.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.83%

Last modified Jun 17, 2026

CVE-2019-16163 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.. EPSS estimates a 2.83% chance of exploitation in the next 30 days.

Description

Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion 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

2.83%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-674

Affected Software

Vendor	Product	Versions
Oniguruma Project	Oniguruma	< 6.9.3
Fedoraproject	Fedora	29
Fedoraproject	Fedora	30
Debian	Debian Linux	8.0
Canonical	Ubuntu Linux	14.04

References

https://github.com/kkos/oniguruma/commit/4097828d7cc87589864fecf452f2cd46c5f37180Patch
https://github.com/kkos/oniguruma/compare/v6.9.2...v6.9.3Patch, Release Notes
https://github.com/kkos/oniguruma/issues/147Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00010.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWOWZZNFSAWM3BUTQNAE3PD44A6JU4KE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZW47MSFZ6WYOAOFXHBDGU4LYACFRKC2Y/
https://usn.ubuntu.com/4460-1/Third Party Advisory
https://github.com/kkos/oniguruma/commit/4097828d7cc87589864fecf452f2cd46c5f37180Patch
https://github.com/kkos/oniguruma/compare/v6.9.2...v6.9.3Patch, Release Notes
https://github.com/kkos/oniguruma/issues/147Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00010.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NWOWZZNFSAWM3BUTQNAE3PD44A6JU4KE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZW47MSFZ6WYOAOFXHBDGU4LYACFRKC2Y/
https://usn.ubuntu.com/4460-1/Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2019-16163?

Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.

How severe is CVE-2019-16163?

CVE-2019-16163 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.83% probability of exploitation in the next 30 days.

How do I fix CVE-2019-16163?

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-2019-16163?

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

Scan your code now

Source: NVD / NIST