CVE-2008-1440
HIGHEPSS 97th pctlDescription
Microsoft Windows XP SP2 and SP3, and Server 2003 SP1 and SP2, does not properly validate the option length field in Pragmatic General Multicast (PGM) packets, which allows remote attackers to cause a denial of service (infinite loop and system hang) via a crafted PGM packet, aka the "PGM Invalid Length Vulnerability."
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
TridentStack Control tracks known vulnerabilities across your Windows, macOS, and Linux fleet and shows the fix as soon as one is published. See how it works
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 97% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1284 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-20699 | Critical | 10.0 | 72% | KEV | - |
| CVE-2021-43267 | Critical | 9.8 | 58% | - | Fix |
| CVE-2022-31629 | Medium | 6.5 | 49% | - | Fix |
| CVE-2025-9316 | Unscored | - | 36% | - | - |
| CVE-2022-36620 | High | 7.5 | 23% | - | - |
| CVE-2022-37134 | Critical | 9.8 | 21% | - | - |
Common questions
How do I fix CVE-2008-1440?
No published fix for CVE-2008-1440 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2008-1440 being actively exploited?
Not that we know of. CVE-2008-1440 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 22.6% is the estimated probability that it will be exploited in the next 30 days. That is higher than 97% of all scored CVEs.
How severe is CVE-2008-1440?
CVE-2008-1440 has a CVSS v2 base score of 7.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
Embed a live status badge for CVE-2008-1440
Markdown
[](https://tridentstack.com/cve/CVE-2008-1440)HTML
<a href="https://tridentstack.com/cve/CVE-2008-1440"><img src="https://tridentstack.com/cve/badge/CVE-2008-1440.svg" alt="CVE-2008-1440"></a>Find and fix vulnerabilities across your fleet
TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.
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.