CVE-2002-1496

Exp

Heap-based buffer overflow in Null HTTP Server 0.5.0 and earlier allows remote attackers to execute arbitrary code via a negative value in the Content-Length HTTP header.

Published: 2003-04-02 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-1496 is rated High Exploit Risk (84.1/100): CVSS High severity, with high exploitation likelihood (EPSS 22.53%, 97th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +7.01% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2002-1496

EDB-ID Source Kind Published Link
21818 exploit_db edb 2002-09-23 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2002-1496

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 15.52% 22.53% +7.01%
2 2026-05-07 14.50% 15.52% +1.02%
3 2025-07-01 — 14.50% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-1496

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2002-1496

Affected software / configurations for CVE-2002-1496

Vendor Product Version Raw CPE
nulllogic null_httpd <= 0.5.0 cpe:2.3:a:nulllogic:null_httpd:*:*:*:*:*:*:*:*

References for CVE-2002-1496

cvelogic Threat Intelligence