Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2008-4609

40
FAUCET Score

CVE-2008-4609 describes a denial-of-service vulnerability affecting the TCP implementations in Linux, BSD-based systems, Microsoft Windows, and Cisco products. Attackers can exploit this by manipulating TCP state table information, leading to connection queue exhaustion, as demonstrated by the "sockstress" attack. With a CVSS score of 7.1, this vulnerability is remotely exploitable with medium attack complexity, resulting in a complete denial of service. Despite its age and broad impact, there is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion beyond a single mention.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:bsd:bsd:-:*:*:*:*:*:*:*
4.1CPE matchmatch criteria
cpe:2.3:o:bsd:bsd:4.1:*:*:*:*:*:*:*
4.2CPE matchmatch criteria
cpe:2.3:o:bsd:bsd:4.2:*:*:*:*:*:*:*
4.3CPE matchmatch criteria
cpe:2.3:o:bsd:bsd:4.3:*:*:*:*:*:*:*
4.4CPE matchmatch criteria
cpe:2.3:o:bsd:bsd:4.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
32.12%
Probability of exploitation in next 30 days
EPSS Percentile
98.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.3212 is in the 94th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2008-4609Moderate

kernel: TCP protocol vulnerabilities from Outpost24

Sep 8, 2009

References

blog.robertlee.name / 2008/10/conjecture-speculation.html
Broken Link
insecure.org / stf/tcp-dos-attack-explained.html
Broken Link
lists.immunitysec.com / pipermail/dailydave/2008-October/005360.html
Broken Link
marc.info
Third Party Advisory
docs.microsoft.com / en-us/security-updates/securitybulletins/2009/ms09-048
PatchThird Party Advisory
searchsecurity.techtarget.com.au / articles/27154-TCP-is-fundamentally-borked
Broken Link
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6340
Broken Link
cert.fi / haavoittuvuudet/2008/tcp-vulnerabilities.html
Broken Link
cisco.com / en/US/products/products_security_advisory09186a0080af511d.shtml
Broken Link
cisco.com / en/US/products/products_security_response09186a0080a15120.html
Broken Link
cpni.gov.uk / Docs/tn-03-09-security-assessment-TCP.pdf
Broken Link
mandriva.com / security/advisories
Broken Link
oracle.com / technetwork/topics/security/cpujul2012-392727.html
Third Party Advisory
outpost24.com / news/news-2008-10-02.html
Broken Link
us-cert.gov / cas/techalerts/TA09-251A.html
Third Party AdvisoryUS Government Resource