Is CVE-2016-10197 in the CISA KEV catalog?

No. CVE-2016-10197 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-10197?

CVE-2016-10197 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2016-10197?

CVE-2016-10197 has an EPSS score of 5.19% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-10197?

Upgrade libevent on debian 11 to 2.0.21-stable-3 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-10197

HIGHEPSS 91th pctl

7.5

CVSS v3

NVD

Description

The search_make_new function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

libeventDebian

Fixed in:2.0.21-stable-3CVE-2016-10197

libeventUbuntu

Fixed in:2.0.21-stable-1ubuntu1.14.04.2USN-3228-1

Fixed in:2.0.21-stable-2ubuntu0.16.04.1USN-3228-1

libevent-2.0-5Ubuntu

Fixed in:2.0.21-stable-1ubuntu1.14.04.2USN-3228-1

Fixed in:2.0.21-stable-2ubuntu0.16.04.1USN-3228-1

thunderbirdUbuntu

Fixed in:1:52.1.1+build1-0ubuntu0.14.04.1USN-3278-1

Fixed in:1:52.1.1+build1-0ubuntu0.16.04.1USN-3278-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

5.19%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory10

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

Embed a live status badge for CVE-2016-10197

Markdown

[![CVE-2016-10197](https://tridentstack.com/cve/badge/CVE-2016-10197.svg)](https://tridentstack.com/cve/CVE-2016-10197)

HTML

<a href="https://tridentstack.com/cve/CVE-2016-10197"><img src="https://tridentstack.com/cve/badge/CVE-2016-10197.svg" alt="CVE-2016-10197"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.