Is CVE-2016-3709 in the CISA KEV catalog?

No. CVE-2016-3709 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-3709?

CVE-2016-3709 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2016-3709?

CVE-2016-3709 has an EPSS score of 0.76% (51th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-3709?

Upgrade libxml2 on debian 11 to 2.9.10+dfsg-6.7+deb11u5 or later. Fixes are available for 15 affected products.

CVE & CISA-KEV Catalog

CVE-2016-3709

MEDIUM

6.1

CVSS v3

NVD

Description

Possible cross-site scripting vulnerability in libxml after commit 960f0e2.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

libxml2Debian

Fixed in:2.9.10+dfsg-6.7+deb11u5CVE-2016-3709

Fixed in:2.9.12+dfsg-3CVE-2016-3709

libxml2Rocky

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2Red Hat / RHEL

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2-debuginfoRocky

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2-debuginfoRed Hat / RHEL

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2-debugsourceRocky

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2-debugsourceRed Hat / RHEL

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2-develRed Hat / RHEL

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2-develRocky

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

python3-libxml2Red Hat / RHEL

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

python3-libxml2Rocky

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

python3-libxml2-debuginfoRocky

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

python3-libxml2-debuginfoRed Hat / RHEL

Fixed in:0:2.9.7-13.el8_6.2RHSA-2023:4767

libxml2Ubuntu

Fixed in:2.9.3+dfsg1-1ubuntu0.7+esm3USN-5548-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.7USN-5548-1

Fixed in:2.9.10+dfsg-5ubuntu0.20.04.4USN-5548-1

libxml2-utilsUbuntu

Fixed in:2.9.3+dfsg1-1ubuntu0.7+esm3USN-5548-1

Fixed in:2.9.4+dfsg1-6.1ubuntu1.7USN-5548-1

Fixed in:2.9.10+dfsg-5ubuntu0.20.04.4USN-5548-1

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 InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.76%probability of exploitation in 30 days

51stpercentile

Moderate risk: more likely to be exploited than 51% of all known CVEs.

References

Exploit1

mail.gnome.org

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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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 2025-11-04.