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Vulnerability record · CVE-2012-5640 · published 25 November 2019
CVE-2012-5640: Acme thttpd null pointer dereference vulnerability
Acme · Thttpd
thttpd has a local DoS vulnerability via specially-crafted .htpasswd files
5.5 CVSS 3.1 Medium EPSS 0.39% · top 69.9% CWE-476 · NULL pointer dereference
5.5CVSS 3.1 base score, v2 2.1
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD
Description
thttpd has a local DoS vulnerability via specially-crafted .htpasswd files
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2012/12/15/1 | Mailing ListThird Party Advisory |
| https://access.redhat.com/security/cve/cve-2012-5640 | Broken Link |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5640 | Issue TrackingThird Party Advisory |
| https://security-tracker.debian.org/tracker/CVE-2012-5640 | Third Party Advisory |
| http://www.openwall.com/lists/oss-security/2012/12/15/1 | Mailing ListThird Party Advisory |
| https://access.redhat.com/security/cve/cve-2012-5640 | Broken Link |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-5640 | Issue TrackingThird Party Advisory |
| https://security-tracker.debian.org/tracker/CVE-2012-5640 | Third Party Advisory |
Track CVE-2012-5640 inside VULONE
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Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
9.8CVE-2007-0158Acme thttpd out-of-bounds write vulnerabilitythttpd 2007 has buffer underflow.EPSS 1.3%9.8CVE-2017-17663Acme mini httpd memory buffer overflow vulnerabilityThe htpasswd implementation of mini_httpd before v1.28 and of thttpd before v2.28 is affected by a buffer overflow that can be exploited remotely to …EPSS 2.7%9.8CVE-2009-4491Acme thttpd improper input validation vulnerabilitythttpd 2.25b0 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, o…EPSS 14%9.8CVE-2003-0899Acme thttpd vulnerabilityBuffer overflow in defang in libhttpd.c for thttpd 2.21 to 2.23b1 allows remote attackers to execute arbitrary code via requests that contain '<' or …EPSS 22%9.8CVE-2001-1496Acme thttpd vulnerabilityOff-by-one buffer overflow in Basic Authentication in Acme Labs thttpd 1.95 through 2.20 allows remote attackers to cause a denial of service and pos…EPSS 4.8%5.0CVE-2001-0892Acme thttpd exposure of resource to wrong sphere vulnerabilityAcme Thttpd Secure Webserver before 2.22, with the chroot option enabled, allows remote attackers to view sensitive files under the document root (su…EPSS 1.9%2.1CVE-2013-0348Open source development team sthttpd permissions and access controls vulnerabilitythttpd.c in sthttpd before 2.26.4-r2 and thttpd 2.25b use world-readable permissions for /var/log/thttpd.log, which allows local users to obtain sens…EPSS 0.52%6.2CVE-2026-21525Windows Remote Access Connection Manager null pointer dereference DoSWindows Remote Access Connection Manager contains a null pointer dereference (CWE-476) that lets an unauthorized attacker deny service locally. The f…KEVEPSS 4.8%analysed
Source: NIST National Vulnerability Database (record CVE-2012-5640), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.
