Skip to content
Fencer Intel
critical 10.0

CVE-2009-4873 in the critical feed json

Stack-based buffer overflow in the HTTP server in Rhino Software Serv-U Web Client 9.0.0.5 allows remote attackers to cause a denial of ser…

published 16y ago modified 4mo ago also EUVD-2009-4836

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
20.6%
EPSS 20.6% chance of exploitation in 30 days, percentile 97%
public exploits
2
Exploit-DB

Summary

Stack-based buffer overflow in the HTTP server in Rhino Software Serv-U Web Client 9.0.0.5 allows remote attackers to cause a denial of service (server crash) or execute arbitrary code via a long Session cookie.

Is CVE-2009-4873 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Timeline

  1. First public exploit (EDB-9966)
  2. Published

Exploit prediction

20.55% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-9966 Serv-U Web Client 9.0.0.5 - Remote Buffer Overflow (1) remote, 2009-11-02
  • EDB-9800 Serv-U Web Client 9.0.0.5 - Remote Buffer Overflow (2) remote, 2009-11-05
  • rangos.de http://www.rangos.de/ServU-ADV.txt referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/36895 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel 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.