CVE-2002-1496

Null Httpd vulnerability

CVSS

7.5

EPSS

22.5%

EPSS pct

97th

Exploited

No known

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.

Affected vendor

Nulllogic

Affected product

Null Httpd

CVSS vector

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

Published

2003-04-02

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 22.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2002-1496

Confirm whether Nulllogic Null Httpd is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2002-1496.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2002-1496

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2002-1496 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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