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NVD / CVE Program· CNA mitre

CVE-2004-0488: Stack-based buffer overflow in the ssl_util_uuencode_binary function in ssl_util.c for Apache mod_ssl, when mod_ssl is configured to trust…

HighCVSS 7.5 · v2.0—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 41/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 37.6% (FIRST EPSS); higher than 98.5% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: apache2 (Debian:12) 2.0.50-1; libapache-mod-ssl (Debian:3.0) 2.8.9-2.4; httpd (Red Hat:enterprise_linux:3::as) 0:2.0.46-32.ent.3.

Add it to your regular patch cycle. Upgrade to apache2 (Debian:12) 2.0.50-1; libapache-mod-ssl (Debian:3.0) 2.8.9-2.4; httpd (Red Hat:enterprise_linux:3::as) 0:2.0.46-32.ent.3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Stack-based buffer overflow in the ssl_util_uuencode_binary function in ssl_util.c for Apache mod_ssl, when mod_ssl is configured to trust the issuing CA, may allow remote attackers to execute arbitrary code via a client certificate with a long subject DN.

Published
Jul 7, 2004
Updated
Jun 16, 2026
EPSS
37.6% · 98th percentile

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Action score

41

Plan

Add it to your regular patch cycle.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
11 / 30 · 37.6%

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  • Not in KEV: no record of exploitation in the wild
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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
apachehttp server
debiandebian linux
redhatenterprise linux server
redhatenterprise linux workstation

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When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Is Apache HTTP Server on your server exposed to the internet?Run a port scan

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apache http server2.0.35 and later · before 2.0.50

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12apache2before 2.0.50-12.0.50-1
Debian:3.0libapache-mod-sslbefore 2.8.9-2.42.8.9-2.4
Red Hat:enterprise_linux:3::ashttpdbefore 0:2.0.46-32.ent.30:2.0.46-32.ent.3
Red Hat:enterprise_linux:3::ashttpd-debuginfobefore 0:2.0.46-32.ent.30:2.0.46-32.ent.3
Red Hat:enterprise_linux:3::ashttpd-develbefore 0:2.0.46-32.ent.30:2.0.46-32.ent.3
Red Hat:enterprise_linux:3::asmod_sslbefore 1:2.0.46-32.ent.31:2.0.46-32.ent.3
Red Hat:network_proxy:4.2::el3jabberdbefore 0:2.0s10-3.37.rhn0:2.0s10-3.37.rhn
Red Hat:network_proxy:4.2::el3rhn-apachebefore 0:1.3.27-36.rhn.rhel30:1.3.27-36.rhn.rhel3
Red Hat:network_proxy:4.2::el3rhn-modperlbefore 0:1.29-16.rhel30:1.29-16.rhel3
Red Hat:network_proxy:4.2::el4jabberdbefore 0:2.0s10-3.38.rhn0:2.0s10-3.38.rhn
Red Hat:network_proxy:4.2::el4rhn-apachebefore 0:1.3.27-36.rhn.rhel40:1.3.27-36.rhn.rhel4
Red Hat:network_proxy:4.2::el4rhn-modperlbefore 0:1.29-16.rhel40:1.29-16.rhel4

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-42013Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)KEV
    99Now
  • CVE-2021-41773Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49KEV
    99Now
  • CVE-2024-38475Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.KEV
    96Now

Published before and after this one in the same product

  • ← EarlierCVE-2004-0173Apr 15, 2004 · Directory traversal vulnerability in Apache 1.3.29 and earlier, and Apache 2.0.48 and earlier, when running on Cygwin, allows remote…
    25Monitor
  • ← EarlierCVE-2004-0174May 4, 2004 · Apache 1.4.x before 1.3.30, and 2.0.x before 2.0.49, when using multiple listening sockets on certain platforms, allows remote attackers to…
    33Monitor
  • Later →CVE-2004-0492Aug 6, 2004 · Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service…
    50Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:apache22.0.50-1 · Debian:12Package registry (OSV)
debian:libapache-mod-ssl2.8.9-2.4 · Debian:3.0Package registry (OSV)
red hat:httpd0:2.0.46-32.ent.3 · Red Hat:enterprise_linux:3::asPackage registry (OSV)
red hat:httpd-debuginfo0:2.0.46-32.ent.3 · Red Hat:enterprise_linux:3::asPackage registry (OSV)
red hat:httpd-devel0:2.0.46-32.ent.3 · Red Hat:enterprise_linux:3::asPackage registry (OSV)
red hat:jabberd0:2.0s10-3.37.rhn · Red Hat:network_proxy:4.2::el3Package registry (OSV)
red hat:mod_ssl1:2.0.46-32.ent.3 · Red Hat:enterprise_linux:3::asPackage registry (OSV)
red hat:rhn-apache0:1.3.27-36.rhn.rhel3 · Red Hat:network_proxy:4.2::el3Package registry (OSV)
red hat:rhn-modperl0:1.29-16.rhel3 · Red Hat:network_proxy:4.2::el3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-787 · Out-of-bounds Write

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records