CVE-2019-16275

MEDIUM

6.5

CVSS v3

Description

hostapd before 2.10 and wpa_supplicant before 2.10 allow an incorrect indication of disconnection in certain situations because source address validation is mishandled. This is a denial of service that should have been prevented by PMF (aka management frame protection). The attacker must send a crafted 802.11 frame from a location that is within the 802.11 communications range.

CWE-346

How to fix

Remediation Available

wpaDebian

Fixed in:2:2.9-2CVE-2019-16275

hostapdUbuntu

Fixed in:1:2.1-0ubuntu1.7+esm2USN-4136-2

Fixed in:1:2.4-0ubuntu6.6USN-4136-1

Fixed in:2:2.6-15ubuntu2.5USN-4136-1

wpaUbuntu

Fixed in:2.1-0ubuntu1.7+esm2USN-4136-2

Fixed in:2.4-0ubuntu6.6USN-4136-1

Fixed in:2:2.6-15ubuntu2.5USN-4136-1

wpasupplicantUbuntu

Fixed in:2.1-0ubuntu1.7+esm2USN-4136-2

Fixed in:2.4-0ubuntu6.6USN-4136-1

Fixed in:2:2.6-15ubuntu2.5USN-4136-1

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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 VectorAdjacent

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.21%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Patch1

w1.fi

Vendor Advisory1

w1.fi

Mitigation2

Third-Party Advisory5

Other references5

Related Vulnerabilities

Other CWE-346 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-34291	High	8.8	84%	KEV	-
CVE-2009-1185	High	7.2	82%	-	Fix
CVE-2015-4495	High	8.8	71%	KEV	Fix
CVE-2020-16952	High	8.6	71%	-	-
CVE-2023-29711	Critical	9.8	70%	-	-
CVE-2024-23898	High	8.8	67%	-	Fix

Common questions

How do I fix CVE-2019-16275?

Published advisories record a fix for 4 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2019-16275 being actively exploited?

Not that we know of. CVE-2019-16275 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 1.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 66% of all scored CVEs.

How severe is CVE-2019-16275?

CVE-2019-16275 has a CVSS v3 base score of 6.5, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2019-16275 affect?

Published advisories record a fix for wpa (Debian), hostapd (Ubuntu), wpa (Ubuntu), wpasupplicant (Ubuntu). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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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 2024-11-21.