CVE-2016-1761

CRITICALNVD 9.89.8—

9.8

libxml2 in Apple iOS before 9.3, OS X before 10.11.4, and watchOS before 2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 94.5%
KEV: Not listed

Published

March 24, 2016

Last Modified

May 6, 2026

Advisory Details (4)

Auto-updated May 8, 2026

No patch confirmed yet.

generic

About the security content of watchOS 2.2 - Apple Support

https://support.apple.com/HT206168

generic

About the security content of OS X El Capitan v10.11.4 and Security Update 2016-002 - Apple Support

https://support.apple.com/HT206167

generic

About the security content of iOS 9.3 - Apple Support

https://support.apple.com/HT206166

generic

ZDI-16-203 | Zero Day Initiative

http://www.zerodayinitiative.com/advisories/ZDI-16-203

Data Freshness Timeline

(refreshed 9× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore
2026-05-27 13:38 UTCEPSS rescore

Frequently asked(5)

What is CVE-2016-1761?

CVE-2016-1761 is a critical vulnerability published on March 24, 2016. libxml2 in Apple iOS before 9.3, OS X before 10.11.4, and watchOS before 2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

When was CVE-2016-1761 disclosed?

CVE-2016-1761 was first published in the National Vulnerability Database on March 24, 2016, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-1761 actively exploited?

CVE-2016-1761 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 94.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-1761?

CVE-2016-1761 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2016-1761?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-1761, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2016-1761

📅 Published

🔄 Last Modified

📋 Advisory Details (4)

About the security content of watchOS 2.2 - Apple Support

About the security content of OS X El Capitan v10.11.4 and Security Update 2016-002 - Apple Support

About the security content of iOS 9.3 - Apple Support

ZDI-16-203 | Zero Day Initiative

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2016-1761?

Published

Last Modified

Advisory Details (4)

Frequently asked(5)