Is CVE-2016-4483 in the CISA KEV catalog?

No. CVE-2016-4483 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-4483?

CVE-2016-4483 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2016-4483?

CVE-2016-4483 has an EPSS score of 6.17% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-4483?

Upgrade libxml2 on debian 11 to 2.9.3+dfsg1-1.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-4483

HIGHEPSS 93th pctl

7.5

CVSS v3

NVD

Description

The xmlBufAttrSerializeTxtContent function in xmlsave.c in libxml2 allows context-dependent attackers to cause a denial of service (out-of-bounds read and application crash) via a non-UTF-8 attribute value, related to serialization. NOTE: this vulnerability may be a duplicate of CVE-2016-3627.

CWE-502Deserialization of Untrusted Data

How to fix

Remediation Available

libxml2Debian

Fixed in:2.9.3+dfsg1-1.1CVE-2016-4483

libxml2Ubuntu

Fixed in:2.9.1+dfsg1-3ubuntu4.8USN-2994-1

Fixed in:2.9.3+dfsg1-1ubuntu0.1USN-2994-1

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

6.17%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch3

Exploit1

openwall.com

Third-Party Advisory8

Other references2

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-47986	Critical	9.8	100%	KEV + Ransom	-

Embed a live status badge for CVE-2016-4483

Markdown

[![CVE-2016-4483](https://tridentstack.com/cve/badge/CVE-2016-4483.svg)](https://tridentstack.com/cve/CVE-2016-4483)

HTML

<a href="https://tridentstack.com/cve/CVE-2016-4483"><img src="https://tridentstack.com/cve/badge/CVE-2016-4483.svg" alt="CVE-2016-4483"></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.