CVE-2008-5828

Microsoft Windows Live Messenger Client 8.5.1 and earlier, when MSN Protocol Version 15 (MSNP15) is used over a NAT session, allows remote attackers to discover intranet IP addresses and port numbers by reading the (1) IPv4InternalAddrsAndPorts, (2) IPv4Internal-Addrs, and (3) IPv4Internal-Port header fields.

Published: 2009-01-02 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2008-5828 is rated Moderate Risk (48.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 17.85%, 95th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2008-5828

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 28.93% 17.85% -11.07%
2 2025-03-29 17.85% 28.93% +11.07%
3 2025-03-17 — 17.85% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2008-5828

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2008-5828

Affected software / configurations for CVE-2008-5828

Vendor Product Version Raw CPE
microsoft windows_live_messenger <= 8.5.1 cpe:2.3:a:microsoft:windows_live_messenger:*:*:*:*:*:*:*:*
microsoft windows_live_messenger 8.0 cpe:2.3:a:microsoft:windows_live_messenger:8.0:*:*:*:*:*:*:*
microsoft windows_live_messenger 8.1 cpe:2.3:a:microsoft:windows_live_messenger:8.1:*:*:*:*:*:*:*
microsoft windows_live_messenger 8.5 cpe:2.3:a:microsoft:windows_live_messenger:8.5:*:*:*:*:*:*:*

References for CVE-2008-5828

cvelogic Threat Intelligence