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CVE-2016-9633

21
FAUCET Score

CVE-2016-9633 describes a denial-of-service vulnerability in the Tatsuya Kinoshita w3m fork, specifically versions prior to 0.5.3-33. An attacker can exploit this by crafting a malicious HTML page, leading to an infinite loop and resource exhaustion on the victim's system. Rated as MEDIUM severity (CVSS 6.5), this vulnerability requires user interaction (UI:R) but can be exploited remotely (AV:N) with low attack complexity (AC:L), resulting in high availability impact (A:H). There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.5.3-32CPE matchmatch criteria
cpe:2.3:a:tats:w3m:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.77%
Probability of exploitation in next 30 days
EPSS Percentile
75.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0177 is in the 87th percentile among its peer group of 26,208 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: w3m

Vendor Advisories (1)

redhatCVE-2016-9633Low

w3m: Memory exhaustion due to repeatedly appending '<table>'

Aug 19, 2016

References

github.com / tats/w3m/blob/master/ChangeLog
Issue TrackingPatch
github.com / tats/w3m/issues/23
Issue TrackingPatch
openwall.com / lists/oss-security/2016/11/24/1
Mailing ListThird Party Advisory