Is CVE-2016-9435 in the CISA KEV catalog?

No. CVE-2016-9435 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-9435?

CVE-2016-9435 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2016-9435?

CVE-2016-9435 has an EPSS score of 3.33% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-9435?

Upgrade w3m on debian 11 to 0.5.3-30 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-9435

MEDIUMEPSS 87th pctl

6.5

CVSS v3

NVD

Description

The HTMLtagproc1 function in file.c in w3m before 0.5.3+git20161009 does not properly initialize values, which allows remote attackers to crash the application via a crafted html file, related to tags.

CWE-20Improper Input Validation

How to fix

Remediation Available

w3mDebian

Fixed in:0.5.3-30CVE-2016-9435

w3mUbuntu

Fixed in:0.5.3-15ubuntu0.1USN-3214-1

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

3.33%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch3

Third-Party Advisory3

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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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 2026-05-13.