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Fencer Vulns
medium 4.6

CVE-2000-0901 json

Format string vulnerability in screen 3.9.5 and earlier allows local users to gain root privileges via format characters in the vbell_msg i…

published 2000-12-19 25 y ago modified 2026-09-23 46 d ago also EUVD-2000-0888

cvss
4.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
1
Exploit-DB

Summary

Format string vulnerability in screen 3.9.5 and earlier allows local users to gain root privileges via format characters in the vbell_msg initialization variable.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2000-0901 updated

security flaw

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-20191)
  2. Published

Exploit prediction

0.97% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-20191 Juergen Weigert screen 3.9 - User Supplied Format String local, 2000-09-05
  • securityfocus.com http://www.securityfocus.com/bid/1641 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.6 AV:L/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.