How severe is CVE-2008-3688?

CVE-2008-3688 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2008-3688 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-3688?

CVE-2008-3688 affects Havp Http Antivirus Proxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-3688?

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-2008-3688 published?

CVE-2008-3688 was published on 2008-08-14 and last updated on 2026-06-16.

CVE-2008-3688

CVE-2008-3688 is a high-severity vulnerability in Havp Http Antivirus Proxy with a CVSS 3.x 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-908.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 4.3
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-908
Affected product: Havp Http Antivirus Proxy
Published: 2008-08-14
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2008-3688?: 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.
How severe is CVE-2008-3688?: CVE-2008-3688 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2008-3688 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-3688?: CVE-2008-3688 affects Havp Http Antivirus Proxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-3688?: 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-2008-3688 published?: CVE-2008-3688 was published on 2008-08-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:havp:http_antivirus_proxy:0.88:*:*:*:*:*:*:*

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