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Fencer Vulns
high 7.5

CVE-2001-0700 in the critical feed json

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

published 2001-09-20 25 y ago modified 2026-06-16 4 mo ago also EUVD-2001-0686

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.6%
EPSS 12.6% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

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

Patch / fix

Timeline

  1. First public exploit (EDB-20941)
  2. Published

Exploit prediction

12.63% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-20941 W3M 0.1/0.2 - Malformed MIME Header Buffer Overflow remote, 2001-06-19
  • securityfocus.com http://www.securityfocus.com/bid/2895 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.