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Fencer Vulns
critical 9.8

CVE-2005-0199 in the critical feed json

Integer underflow in the Lists_MakeMask() function in lists.c in ngIRCd before 0.8.2 allows remote attackers to cause a denial of service (…

published 2005-02-06 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-0200

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
18.8%
EPSS 18.8% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Integer underflow in the Lists_MakeMask() function in lists.c in ngIRCd before 0.8.2 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long MODE line that causes an incorrect length calculation, which leads to a buffer overflow.

Patch / fix

  • barton ngircd 0.8.2

Timeline

  1. First public exploit (EDB-25070)
  2. Published

Exploit prediction

18.77% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-25070 ngIRCd 0.6/0.7/0.8 - Remote Buffer Overflow dos, 2005-01-28
  • securityfocus.com http://www.securityfocus.com/bid/12397 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-191 Integer Underflow (Wrap or Wraparound)

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.