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CVE-2019-16161

23
FAUCET Score

CVE-2019-16161 describes a NULL pointer dereference vulnerability in Onigmo versions up to and including 6.2.0, specifically within the fetch_token function in regparse.c. This flaw carries a CVSS v3.1 score of 7.5 (High), indicating that an unauthenticated attacker could remotely trigger a denial-of-service condition with low attack complexity. Currently, there is no evidence of active exploitation, nor are there publicly available exploit modules or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.2.0CPE matchmatch criteria
cpe:2.3:a:k-takata:onigmo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.07%
Probability of exploitation in next 30 days
EPSS Percentile
79.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0207 is in the 64th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (7)

github_advisorypatch availablevia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: ruby
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:2.5/ruby
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: ruby:2.6/ruby
redhatvendor investigatingvia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby24-ruby
redhatvendor investigatingvia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby25-ruby
redhatvendor investigatingvia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-ruby26-ruby

Vendor Advisories (1)

redhatCVE-2019-16161Low

onigmo: NULL pointer dereference in onig_error_code_to_str because of fetch_token in regparse.c

Jul 28, 2019

References

github.com / k-takata/Onigmo/commit/9827d5a0298ee766f6041db9c0080166ff6cdce8
PatchThird Party Advisory
github.com / k-takata/Onigmo/issues/132
ExploitThird Party Advisory