Is CVE-2004-1008 in the CISA KEV catalog?

No. CVE-2004-1008 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-1008?

CVE-2004-1008 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2004-1008?

CVE-2004-1008 has an EPSS score of 7.36% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2004-1008?

Upgrade putty on debian 11 to 0.56-1 or later.

CVE & CISA-KEV Catalog

CVE-2004-1008

HIGHEPSS 94th pctl

10.0

CVSS v2

NVD

Description

Integer signedness error in the ssh2_rdpkt function in PuTTY before 0.56 allows remote attackers to execute arbitrary code via a SSH2_MSG_DEBUG packet with a modified stringlen parameter, which leads to a buffer overflow.

How to fix

Remediation Available

puttyDebian

Fixed in:0.56-1CVE-2004-1008

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

7.36%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch2

Other references9

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.