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Vulnerability record · CVE-2001-0700 · published 20 September 2001

CVE-2001-0700: W3m vulnerability

W3m · W3m

Buffer overflow in w3m 0.2.1 and earlier allows a remote attacker to execute arbitrary code via a long base64 encoded MIME header.

7.5 CVSS 2.0 High EPSS 13% · top 3.9%
7.5CVSS 2.0 base score
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Buffer overflow in w3m 0.2.1 and earlier allows a remote attacker to execute arbitrary code via a long base64 encoded MIME header.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000434
http://mi.med.tohoku.ac.jp/~satodai/w3m-dev-en/200106.month/537.html PatchVendor Advisory
http://www.debian.org/security/2001/dsa-064
http://www.debian.org/security/2001/dsa-081
http://www.securityfocus.com/archive/1/192371
http://www.securityfocus.com/bid/2895 ExploitPatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6725
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000434
http://mi.med.tohoku.ac.jp/~satodai/w3m-dev-en/200106.month/537.html PatchVendor Advisory
http://www.debian.org/security/2001/dsa-064
http://www.debian.org/security/2001/dsa-081
http://www.securityfocus.com/archive/1/192371
http://www.securityfocus.com/bid/2895 ExploitPatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/6725

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2006-6772W3m vulnerabilityFormat string vulnerability in the inputAnswer function in file.c in w3m before 0.5.2, when run with the dump or backend option, allows remote attack…EPSS 4.8%6.8CVE-2010-2074W3m improper input validation vulnerabilityistream.c in w3m 0.5.2 and possibly other versions, when ssl_verify_server is enabled, does not properly handle a '\0' character in a domain name in …EPSS 1.5%5.0CVE-2002-1348W3m vulnerabilityw3m before 0.3.2.2 does not properly escape HTML tags in the ALT attribute of an IMG tag, which could allow remote attackers to access files or cooki…EPSS 2.0%4.3CVE-2002-1335W3m vulnerabilityCross-site scripting (XSS) vulnerability in w3m 0.3.2 does not escape an HTML tag in a frame, which allows remote attackers to insert arbitrary web s…EPSS 2.5%

Source: NIST National Vulnerability Database (record CVE-2001-0700), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.