How severe is CVE-2008-5730?

CVE-2008-5730 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2008-5730 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5730?

CVE-2008-5730 primarily affects Netcat. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5730?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2008-5730 published?

CVE-2008-5730 was published on 2008-12-26 and last updated on 2026-06-16.

CVE-2008-5730

CVE-2008-5730 is a high-severity vulnerability in Netcat with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Netcat
Published: 2008-12-26
Last modified: 2026-06-16

Description

Multiple CRLF injection vulnerabilities in AIST NetCat 3.12 and earlier allow remote attackers to have an unknown impact via unspecified vectors involving (1) a %0a sequence in a cookie and (2) the add.php file.

Frequently asked questions

What is CVE-2008-5730?: Multiple CRLF injection vulnerabilities in AIST NetCat 3.12 and earlier allow remote attackers to have an unknown impact via unspecified vectors involving (1) a %0a sequence in a cookie and (2) the add.php file.
How severe is CVE-2008-5730?: CVE-2008-5730 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2008-5730 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5730?: CVE-2008-5730 primarily affects Netcat. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5730?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2008-5730 published?: CVE-2008-5730 was published on 2008-12-26 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:netcat:netcat:*:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:1.1:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:2.0:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:2.1:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:2.2:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:2.3:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:2.4:*:*:*:*:*:*:*
cpe:2.3:a:netcat:netcat:3.0:*:*:*:*:*:*:*

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