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CVE-2004-0492

41
FAUCET Score

CVE-2004-0492 describes a critical heap-based buffer overflow in the mod_proxy module of Apache HTTP Server versions 1.3.25 through 1.3.31, also affecting products from HP, IBM, OpenBSD, and SGI. This vulnerability, with a CVSS score of 10.0, allows unauthenticated remote attackers to trigger a denial of service and potentially execute arbitrary code by sending a specially crafted HTTP request with a negative Content-Length header. Despite its high severity and potential for remote code execution, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.26CPE matchmatch criteria
cpe:2.3:a:apache:http_server:1.3.26:*:*:*:*:*:*:*
1.3.27CPE matchmatch criteria
cpe:2.3:a:apache:http_server:1.3.27:*:*:*:*:*:*:*
1.3.28CPE matchmatch criteria
cpe:2.3:a:apache:http_server:1.3.28:*:*:*:*:*:*:*
1.3.29CPE matchmatch criteria
cpe:2.3:a:apache:http_server:1.3.29:*:*:*:*:*:*:*
1.3.31CPE matchmatch criteria
cpe:2.3:a:apache:http_server:1.3.31:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
33.64%
Probability of exploitation in next 30 days
EPSS Percentile
98.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.3364 is in the 97th percentile among its peer group of 51,455 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

debianpatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux AS (Advanced Server) version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux ES version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux WS version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux Advanced Workstation 2.1
View patch

Vendor Advisories (1)

redhatCVE-2004-0492Low

httpd mod_proxy buffer overflow

Jun 10, 2004

References

patches.sgi.com / support/free/security/advisories/20040605-01-U.asc
marc.info
marc.info
rhn.redhat.com / errata/RHSA-2004-245.html
PatchVendor Advisory
bugzilla.fedora.us / show_bug.cgi
seclists.org / lists/fulldisclosure/2004/Jun/0296.html
secunia.com / advisories/11841
exchange.xforce.ibmcloud.com / vulnerabilities/16387
lists.apache.org / thread.html/r5419c9ba0951ef73a655362403d12bb8d10fab38274deb3f005816f5%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r734a07156abf332d5ab27fb91d9d962cacfef4f3681e44056f064fa8%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rd65d8ba68ba17e7deedafbf5bb4899f2ae4dad781d21b931c2941ac3%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/re895fc1736d25c8cf57e102c871613b8aeec9ea26fd8a44e7942b5ab%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rf2f0f3611f937cf6cfb3b4fe4a67f69885855126110e1e3f2fb2728e%40%3Ccvs.httpd.apache.org%3E
lists.apache.org / thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A100112
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4863
sunsolve.sun.com / search/document.do
sunsolve.sun.com / search/document.do
sunsolve.sun.com / search/document.do
debian.org / security/2004/dsa-525
PatchVendor Advisory
guninski.com / modproxy1.html
kb.cert.org / vuls/id/541310
US Government Resource
mandriva.com / security/advisories