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Vulnerability record · CVE-2008-5828 · published 2 January 2009

CVE-2008-5828: Microsoft windows live messenger information exposure vulnerability

Microsoft · Windows Live Messenger

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.

5.0 CVSS 2.0 Medium EPSS 14% · top 3.5% CWE-200 · Information exposure
5.0CVSS 2.0 base score
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://securityreason.com/securityalert/4862
http://www.securityfocus.com/archive/1/499624/100/0/threaded
http://securityreason.com/securityalert/4862
http://www.securityfocus.com/archive/1/499624/100/0/threaded

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2008-5828), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.