Is CVE-2008-3688 in the CISA KEV catalog?

No. CVE-2008-3688 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-3688?

CVE-2008-3688 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2008-3688?

CVE-2008-3688 has an EPSS score of 3.00% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2008-3688?

Upgrade havp on debian 11 to 0.88-1.1 or later.

CVE & CISA-KEV Catalog

CVE-2008-3688

HIGHEPSS 86th pctl

7.5

CVSS v3

NVD

Description

sockethandler.cpp in HTTP Antivirus Proxy (HAVP) 0.88 allows remote attackers to cause a denial of service (hang) by connecting to a non-responsive server, which triggers an infinite loop due to an uninitialized variable.

CWE-908

How to fix

Remediation Available

havpDebian

Fixed in:0.88-1.1CVE-2008-3688

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

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

3.00%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

sourceforge.net

Third-Party Advisory4

Product1

server-side.de

Other references2

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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 2026-04-23.