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CVE-2006-6772

24
FAUCET Score

CVE-2006-6772 describes a format string vulnerability in the inputAnswer function of w3m versions prior to 0.5.2, specifically when used with the dump or backend options. This flaw allows remote attackers to execute arbitrary code by embedding format string specifiers within the Common Name field of an SSL certificate for an HTTPS URL. The vulnerability carries a critical CVSS score of 9.3, indicating a network-based attack with medium complexity, requiring no authentication, and leading to complete compromise of confidentiality, integrity, and availability. Its FAUCET Risk Score is 90/100. Despite its severity, there is no evidence of active exploitation, nor are there publicly available exploits in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, suggesting a low level of public attention.

Impacted Technologies

VendorProductVersion(s)CPE
0.5.1CPE matchmatch criteria
cpe:2.3:a:w3m:w3m:0.5.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.70%
Probability of exploitation in next 30 days
EPSS Percentile
90.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0470 is in the 56th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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

Vendor Advisories (1)

redhatCVE-2006-6772

CVE-2006-6772 w3m is vulnerable to format string attack via CN field of SSL/TLS certificate when infoked with -dump/-backend

Dec 25, 2006

References

fedoranews.org / cms/node/2415
fedoranews.org / cms/node/2416
lists.grok.org.uk / pipermail/full-disclosure/2006-December/051457.html
secunia.com / advisories/23492
Vendor Advisory
secunia.com / advisories/23588
Vendor Advisory
secunia.com / advisories/23717
Vendor Advisory
secunia.com / advisories/23773
Vendor Advisory
secunia.com / advisories/23792
Vendor Advisory
security.gentoo.org / glsa/glsa-200701-06.xml
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/31114
exchange.xforce.ibmcloud.com / vulnerabilities/34821
sourceforge.net / tracker/index.php
w3m.cvs.sourceforge.net / %2Acheckout%2A/w3m/w3m/NEWS
w3m.cvs.sourceforge.net / w3m/w3m/file.c
w3m.cvs.sourceforge.net / w3m/w3m/file.c
novell.com / linux/security/advisories/2007_05_w3m.html
openpkg.com / security/advisories/OpenPKG-SA-2006.044.html
securityfocus.com / bid/21735
securityfocus.com / bid/24332
ubuntu.com / usn/usn-399-1
vupen.com / english/advisories/2006/5164
Vendor Advisory