Is CVE-2016-4477 in the CISA KEV catalog?

No. CVE-2016-4477 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-4477?

CVE-2016-4477 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2016-4477?

CVE-2016-4477 has an EPSS score of 0.26% (17th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-4477?

Upgrade wpa on debian 11 to 2.3-2.4 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2016-4477

HIGH

7.8

CVSS v3

NVD

Description

wpa_supplicant 0.4.0 through 2.5 does not reject \n and \r characters in passphrase parameters, which allows local users to trigger arbitrary library loading and consequently gain privileges, or cause a denial of service (daemon outage), via a crafted (1) SET, (2) SET_CRED, or (3) SET_NETWORK command.

CWE-19

How to fix

Remediation Available

wpaDebian

Fixed in:2.3-2.4CVE-2016-4477

hostapdUbuntu

Fixed in:1:2.1-0ubuntu1.5USN-3455-1

Fixed in:1:2.4-0ubuntu6.2USN-3455-1

wpaUbuntu

Fixed in:2.1-0ubuntu1.5USN-3455-1

Fixed in:2.4-0ubuntu6.2USN-3455-1

wpasupplicantUbuntu

Fixed in:2.1-0ubuntu1.5USN-3455-1

Fixed in:2.4-0ubuntu6.2USN-3455-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

0.26%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Vendor Advisory1

source.android.com

Other references2

Related Vulnerabilities

Other CWE-19 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2015-5477	High	7.8	91%	-	Fix
CVE-2014-9034	Medium	5.0	83%	-	Fix
CVE-2016-4977	High	8.8	79%	-	-
CVE-2016-3236	Critical	9.8	78%	-	-
CVE-2014-7141	Medium	6.4	76%	-	Fix
CVE-2015-5374	High	7.8	74%	-	-

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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 2026-05-06.