Vulnerability
CVE-2002-1850
CVE-2002-1850 is a high-severity vulnerability (CVSS v3.1 7.5). As of 2026-11-02, 6 hosts in our data show software it affects on an open service in 4 countries.
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.
- Published
- 2002-12-31
- Last modified
- 2026-06-16
- CVSS score
- 7.5 CVSS v3.1
- CVSS vector (v3.1)
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Exploit likelihood (EPSS)
- 17.4% in the next 30 days (top 3% of CVEs)
Exposure in our data
6 hosts
Hosts whose banner shows an affected software version on a service open at their latest check.
Not counted: 19 hosts with this CVE only from an older observation.
Not counted: 20 more on distribution builds that may be patched (the distribution may have backported the fix without changing the version).
2 more hosts had it earlier (the software version has since changed or the service is gone).
Counted 2026-11-02 04:20 UTC
By country
| Austria AT | 2 |
| Finland FI | 2 |
| Russia RU | 1 |
| United States US | 1 |
Affected software seen
| http_server 2.0.39 | 3 |
| http_server 2.0.40 | 3 |