How severe is CVE-2005-3675?

CVE-2005-3675 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2005-3675 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-2005-3675?

CVE-2005-3675 affects Tcp. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2005-3675?

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-2005-3675 published?

CVE-2005-3675 was published on 2005-11-18 and last updated on 2026-06-16.

CVE-2005-3675

CVE-2005-3675 is a high-severity vulnerability in Tcp with a CVSS 2.0 base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Tcp
Published: 2005-11-18
Last modified: 2026-06-16

Description

The Transmission Control Protocol (TCP) allows remote attackers to cause a denial of service (bandwidth consumption) by sending ACK messages for packets that have not yet been received (optimistic ACKs), which can cause the sender to increase its transmission rate until it fills available bandwidth.

Frequently asked questions

What is CVE-2005-3675?: The Transmission Control Protocol (TCP) allows remote attackers to cause a denial of service (bandwidth consumption) by sending ACK messages for packets that have not yet been received (optimistic ACKs), which can cause the sender to increase its transmission rate until it fills available bandwidth.
How severe is CVE-2005-3675?: CVE-2005-3675 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2005-3675 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-2005-3675?: CVE-2005-3675 affects Tcp. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2005-3675?: 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-2005-3675 published?: CVE-2005-3675 was published on 2005-11-18 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:tcp:tcp:*:*:*:*:*:*:*:*

More vulnerabilities in Tcp

CVE-2005-0065 — Critical (CVSS 10.0): The original design of TCP does not check that the TCP sequence number in an ICMP error message is within the range of…
CVE-2005-0068 — Medium (CVSS 5.0): The original design of ICMP does not require authentication for host-generated ICMP error messages, which makes it…
CVE-2005-0066 — Medium (CVSS 5.0): The original design of TCP does not check that the TCP Acknowledgement number in an ICMP error message generated by an…
CVE-2005-0067 — Medium (CVSS 5.0): The original design of TCP does not require that port numbers be assigned randomly (aka "Port randomization"), which…
CVE-2004-1060 — Medium (CVSS 5.0): Multiple TCP/IP and ICMP implementations, when using Path MTU (PMTU) discovery (PMTUD), allow remote attackers to cause…

All CVEs affecting Tcp →