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Fencer Vulns
high 7.5

CVE-2003-1387 in the critical feed json

Buffer overflow in Opera 6.05 and 6.06, and possibly other versions, allows remote attackers to execute arbitrary code via a URL with a lon…

published 2003-12-31 22 y ago modified 2026-06-16 4 mo ago also EUVD-2003-1377

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
14.7%
EPSS 14.7% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

Buffer overflow in Opera 6.05 and 6.06, and possibly other versions, allows remote attackers to execute arbitrary code via a URL with a long username.

Patch / fix

Timeline

  1. First public exploit (EDB-22239)
  2. Published

Exploit prediction

14.67% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-22239 Opera 6.0/7.0 - 'Username' URI Warning Dialog Buffer Overflow dos, 2003-02-10
  • securityfocus.com http://www.securityfocus.com/archive/1/315794 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

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.