CVE-2002-1783

Php vulnerability

CVSS

5.0

EPSS

16.7%

EPSS pct

97th

Exploited

No known

CRLF injection vulnerability in PHP 4.2.1 through 4.2.3, when allow_url_fopen is enabled, allows remote attackers to modify HTTP headers for outgoing requests by causing CRLF sequences to be injected into arguments that are passed to the (1) fopen or (2) file functions.

Affected vendor

Php

Affected product

Php

CVSS vector

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

Published

2002-12-31

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 integrity.

Its EPSS score of 16.7% 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-2002-1783

Confirm whether Php Php is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2002-1783.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2002-1783

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2002-1783 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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