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CVE-2008-4609· NVD / CVE Program· CNA mitre

The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft Windows, (4) Cisco products, and probably other operatin

The TCP implementation in (1) Linux, (2) platforms based on BSD Unix, (3) Microsoft Windows, (4) Cisco products, and probably other operating systems allows remote attackers to cause a denial of service (connection queue exhaustion) via multiple vectors that manipulate information in the TCP state table, as demonstrated by sockstress.

HighCVSS 7.1 · v2.0—Proof of concept No fix recorded
Published
Oct 20, 2008
Updated
Jun 16, 2026
EPSS
32.1% · 98th percentile
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Report tools

JSON

Action score

38

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
10 / 30 · 32.1%

Affected systems

VendorProduct
bsdbsd
bsdibsd os
ciscoios
dragonflybsddragonflybsd
freebsdfreebsd
linuxlinux kernel
midnightbsdmidnightbsd
netbsdnetbsd
openbsdopenbsd
trustedbsdtrustedbsd
microsoftwindows 2000
microsoftwindows server 2003

and 10 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft windows server 2003all versions
  • microsoft windows server 2008all versions

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxall versions—

Same product

bsd: all records

Other highest-scoring records for the same primary product.

  • CVE-2001-0670Buffer overflow in BSD line printer daemon (in.lpd or lpd) in various BSD-based operating systems allows remote attackers to execute arbitra
    32Monitor
  • CVE-1999-1471Buffer overflow in passwd in BSD based operating systems 4.3 and earlier allows local users to gain root privileges by specifying a long she
    28Monitor
  • CVE-2014-7250The TCP stack in 4.3BSD Net/2, as used in FreeBSD 5.4, NetBSD possibly 2.0, and OpenBSD possibly 3.6, does not properly implement the sessio
    21Monitor
  • CVE-1999-1098Vulnerability in BSD Telnet client with encryption and Kerberos 4 authentication allows remote attackers to decrypt the session via sniffing
    20Monitor
  • CVE-1999-1102lpr on SunOS 4.1.1, BSD 4.3, A/UX 2.0.1, and other BSD-based operating systems allows local users to create or overwrite arbitrary files via
    8Monitor
  • CVE-1999-1394BSD 4.4 based operating systems, when running at security level 1, allow the root user to clear the immutable and append-only flags for file
    8Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:172016-05-06

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+2754 d
  3. TodaySep 30, 2026+6554 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

    If successful

    Confidentiality
    none
    Integrity
    none
    Availability
    C · the service can be disrupted
    Attack complexity
    M
    Confidentiality impact
    None
    Integrity impact
    None
    Availability impact
    C

    Weakness class (CWE)

    CWE-16 · Configuration

    CVSS vector

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

    nvd-primary

    Attack context

    MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

    MITRE has no CAPEC/ATT&CK mapping for this CWE.

    Noroxi analysis

    No Noroxi analysis for this record yet

    We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

    We use this product, ask for help

    Change log

    No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

    References

    Vendor advisories and official records. Exploit/PoC links are deliberately left out.

    All records