Description
Microsoft Exchange 5.5 allows a remote attacker to relay email (i.e. spam) using encapsulated SMTP addresses, even if the anti-relaying features are enabled.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
x_refsource_mskb
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ237927
Broken Link third-party-advisory
government-resource
x_refsource_ciac
http://www.ciac.org/ciac/bulletins/j-056.shtml
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/567
Patch, Vendor Advisory vendor-advisory
x_refsource_ms
https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-027
Scores
EPSS
0.2610
EPSS Percentile
97.8%
Details
Status
published
Products (1)
microsoft/exchange_server
5.5 (3 CPE variants)
Published
Aug 06, 1999
Tracked Since
Feb 18, 2026