CVE-2002-1850

Name: CVE-2002-1850
Creator: NVD / NIST
Published: 2002-12-31T05:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 17.41%

Last modified Jun 16, 2026

CVE-2002-1850 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.. EPSS estimates a 17.41% chance of exploitation in the next 30 days.

Description

mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

17.41%

96.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-667

Affected Software

Vendor	Product	Versions
Apache	Http Server	2.0.39
Apache	Http Server	2.0.40

References

http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8Broken Link
http://issues.apache.org/bugzilla/show_bug.cgi?id=10515Issue Tracking
http://issues.apache.org/bugzilla/show_bug.cgi?id=22030Issue Tracking, Patch
http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2Mailing List
http://seclists.org/bugtraq/2002/Sep/0253.htmlExploit, Mailing List, Third Party Advisory
http://securitytracker.com/id?1007823Broken Link, Patch, Third Party Advisory, VDB Entry
http://www.iss.net/security_center/static/10200.phpBroken Link, Patch
http://www.securityfocus.com/bid/5787Broken Link, Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/8725Broken Link, Patch, Third Party Advisory, VDB Entry
http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8Broken Link
http://issues.apache.org/bugzilla/show_bug.cgi?id=10515Issue Tracking
http://issues.apache.org/bugzilla/show_bug.cgi?id=22030Issue Tracking, Patch
http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2Mailing List
http://seclists.org/bugtraq/2002/Sep/0253.htmlExploit, Mailing List, Third Party Advisory
http://securitytracker.com/id?1007823Broken Link, Patch, Third Party Advisory, VDB Entry
http://www.iss.net/security_center/static/10200.phpBroken Link, Patch
http://www.securityfocus.com/bid/5787Broken Link, Exploit, Third Party Advisory, VDB Entry
http://www.securityfocus.com/bid/8725Broken Link, Patch, Third Party Advisory, VDB Entry

Timeline

Published: Dec 31, 2002
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2002-1850?

How severe is CVE-2002-1850?

CVE-2002-1850 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 17.41% probability of exploitation in the next 30 days.

How do I fix CVE-2002-1850?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2002-1850?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST