CVE-2005-2540

Flatnuke vulnerability

CVSS

5.0

EPSS

6.1%

EPSS pct

93th

Exploited

No known

CRLF injection vulnerability in FlatNuke 2.5.5 and possibly earlier versions allows remote attackers to execute arbitrary PHP commands via an ASCII char 13 (carriage return) in the signature field, which is injected into a PHP script without a preceding comment character, which can then be executed by a direct request.

Affected vendor

Flatnuke

Affected product

Flatnuke

CVSS vector

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

Published

2005-08-10

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 6.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2005-2540

Confirm whether Flatnuke Flatnuke is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2005-2540.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-2540

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-2540 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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