← Vulnerability feed

Vulnerability record · CVE-2001-0843 · published 6 December 2001

CVE-2001-0843: Squid web proxy vulnerability

Squid · Squid Web Proxy

Squid proxy server 2.4 and earlier allows remote attackers to cause a denial of service (crash) via a mkdir-only FTP PUT request.

5.0 CVSS 2.0 Medium EPSS 2.8% · top 13.8%
5.0CVSS 2.0 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
16 Jun 2026Last modified by NVD

Description

Squid proxy server 2.4 and earlier allows remote attackers to cause a denial of service (crash) via a mkdir-only FTP PUT request.

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

Affected products

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

References

LinkTags
http://archives.neohapsis.com/archives/linux/conectiva/2001-q3/0020.html
http://marc.info/?l=bugtraq&m=100109679010256&w=2
http://www.debian.org/security/2001/dsa-077
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-088.php3
http://www.novell.com/linux/security/advisories/2001_037_squid_txt.html
http://www.redhat.com/support/errata/RHSA-2001-113.html PatchVendor Advisory
http://www.securityfocus.com/bid/3354
https://exchange.xforce.ibmcloud.com/vulnerabilities/7157
http://archives.neohapsis.com/archives/linux/conectiva/2001-q3/0020.html
http://marc.info/?l=bugtraq&m=100109679010256&w=2
http://www.debian.org/security/2001/dsa-077
http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-088.php3
http://www.novell.com/linux/security/advisories/2001_037_squid_txt.html
http://www.redhat.com/support/errata/RHSA-2001-113.html PatchVendor Advisory
http://www.securityfocus.com/bid/3354
https://exchange.xforce.ibmcloud.com/vulnerabilities/7157

Track CVE-2001-0843 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2001-1030Caldera openlinux server vulnerabilitySquid before 2.3STABLE5 in HTTP accelerator mode does not enable access control lists (ACLs) when the httpd_accel_host and http_accel_with_proxy off …EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2001-0843), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.