CVE-2019-16746

CRITICALNVD 9.89.8—

9.8

An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 85.8%
KEV: Not listed

Published

September 24, 2019

Last Modified

November 21, 2024

Advisory Details (6)

Auto-updated May 27, 2026

Patch available.

generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20191031-0005/

generic

Bugtraq: [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)

https://seclists.org/bugtraq/2019/Nov/11

generic

'[PATCH 1/2] nl80211: validate beacon head' - MARC

https://marc.info/?l=linux-wireless&m=156901391225058&w=2

generic

[SECURITY] Fedora 30 Update: kernel-tools-5.3.6-200.fc30 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TASE2ESEZAER6DTZH3DJ4K2JNO46TVL7/

generic Patch Available

[SECURITY] [DLA 2114-1] linux-4.9 security update

https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html

generic Patch Available

[SECURITY] [DLA 2068-1] linux security update

https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html

Patch Availability(7)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-image-lowlatency (5.3.0.22.26) @ eoan	2026-05-27	ubuntu
ubuntu	linux-image-virtual-lts-xenial (4.4.0.168.176) @ xenial	2026-05-27	ubuntu
ubuntu	linux-image-virtual (5.0.0.37.39) @ disco	2026-05-27	ubuntu
ubuntu	linux-image-virtual-hwe-16.04-edge (4.15.0.72.92) @ xenial	2026-05-27	ubuntu
redhat	kernel-0:4.18.0-193.el8	2020-04-28	redhat
redhat	kernel-rt-0:3.10.0-1127.rt56.1093.el7	2020-03-31	redhat
redhat	kernel-0:3.10.0-1127.el7	2020-03-31	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-120Buffer Copy without Checking Size (Classic Buffer Overflow)

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

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

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 14:01 UTCEG score recompute
2026-05-27 14:01 UTCVendor advisory
2026-05-27 14:01 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2019-16746?

CVE-2019-16746 is a critical vulnerability published on September 24, 2019. An issue was discovered in net/wireless/nl80211.c in the Linux kernel through 5.2.17. It does not check the length of variable elements in a beacon head, leading to a buffer overflow.

When was CVE-2019-16746 disclosed?

CVE-2019-16746 was first published in the National Vulnerability Database on September 24, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-16746 actively exploited?

CVE-2019-16746 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-16746?

CVE-2019-16746 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-16746?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-16746, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-16746

Explore →

Is Your Infrastructure Affected by CVE-2019-16746?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2019-16746

Published

Last Modified

Advisory Details (6)

NetApp Product Security

Bugtraq: [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)

'[PATCH 1/2] nl80211: validate beacon head' - MARC

[SECURITY] Fedora 30 Update: kernel-tools-5.3.6-200.fc30 - package-announce - Fedora mailing-lists

[SECURITY] [DLA 2114-1] linux-4.9 security update

[SECURITY] [DLA 2068-1] linux security update

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-16746?

Same vendor

Same CWE

CVE-2019-16746

📅 Published

🔄 Last Modified

📋 Advisory Details (6)

NetApp Product Security

Bugtraq: [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)

'[PATCH 1/2] nl80211: validate beacon head' - MARC

[SECURITY] Fedora 30 Update: kernel-tools-5.3.6-200.fc30 - package-announce - Fedora mailing-lists

[SECURITY] [DLA 2114-1] linux-4.9 security update

[SECURITY] [DLA 2068-1] linux security update

Patch Availability(7)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2019-16746?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (6)

Frequently asked(5)

Related CVEs(same vendor + same CWE)