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Vulnerability record · CVE-2001-0191 · published 3 May 2001

CVE-2001-0191: Andynorman gnuserv classic buffer overflow vulnerability

Andynorman · Gnuserv

gnuserv before 3.12, as shipped with XEmacs, does not properly check the specified length of an X Windows MIT-MAGIC-COOKIE cookie, which allows remote attackers to execute arbitrary commands via a buffer overflow, or brute force authentication by using a short cookie length.

10.0 CVSS 2.0 High EPSS 5.5% · top 7.5% CWE-120 · Classic buffer overflow
10.0CVSS 2.0 base score
5.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

gnuserv before 3.12, as shipped with XEmacs, does not properly check the specified length of an X Windows MIT-MAGIC-COOKIE cookie, which allows remote attackers to execute arbitrary commands via a buffer overflow, or brute force authentication by using a short cookie length.

AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2001-02/0030.html Broken LinkPatchVendor Advisory
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-019.php3 Broken LinkPatch
http://www.redhat.com/support/errata/RHSA-2001-010.html Broken LinkPatch
http://www.redhat.com/support/errata/RHSA-2001-011.html Broken LinkPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/6056 Third Party AdvisoryVDB Entry
http://archives.neohapsis.com/archives/bugtraq/2001-02/0030.html Broken LinkPatchVendor Advisory
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-019.php3 Broken LinkPatch
http://www.redhat.com/support/errata/RHSA-2001-010.html Broken LinkPatch
http://www.redhat.com/support/errata/RHSA-2001-011.html Broken LinkPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/6056 Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2001-0191), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.