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Fencer Vulns
high 7.2

CVE-2002-0851 json

Format string vulnerability in ISDN Point to Point Protocol (PPP) daemon (ipppd) in the ISDN4Linux (i4l) package allows local users to gain…

published 2002-09-05 24 y ago modified 2026-06-16 4 mo ago also EUVD-2002-0843

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
2
Exploit-DB

Summary

Format string vulnerability in ISDN Point to Point Protocol (PPP) daemon (ipppd) in the ISDN4Linux (i4l) package allows local users to gain root privileges via format strings in the device name command line argument, which is not properly handled in a call to syslog.

Patch / fix

Timeline

  1. First public exploit (EDB-21701)
  2. Published

Exploit prediction

1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-21701 ISDN4Linux 3.1 - IPPPD Device String SysLog Format String (2) local, 2002-08-10
  • EDB-21700 ISDN4Linux 3.1 - IPPPD Device String SysLog Format String (1) local, 2002-08-10
  • securityfocus.com http://www.securityfocus.com/bid/5437 referenced PoC, tagged "exploit" by a source, unverified
  • archives.neohapsis.com http://archives.neohapsis.com/archives/vulnwatch/2002-q3/0068.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

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.