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Vulnerability record · CVE-2009-4490 · published 13 January 2010

CVE-2009-4490: Acme mini httpd improper input validation vulnerability

Acme · Mini Httpd

mini_httpd 1.19 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

5.0 CVSS 2.0 Medium EPSS 10% · top 4.5% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
10%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

mini_httpd 1.19 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

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

Affected products

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

References

LinkTags
http://www.securityfocus.com/archive/1/508830/100/0/threaded
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt Exploit
http://www.securityfocus.com/archive/1/508830/100/0/threaded
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt Exploit

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2009-4490), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.