Skip to content
Fencer Vulns
medium 5.0

CVE-1999-1033 json

Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause…

published 1999-05-11 27 y ago modified 2026-06-16 4 mo ago also EUVD-1999-1014

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
17.5%
EPSS 17.5% chance of exploitation in 30 days, percentile 97%
public exploits
1
Exploit-DB

Summary

Microsoft Outlook Express before 4.72.3612.1700 allows a malicious user to send a message that contains a .., which can inadvertently cause Outlook to re-enter POP3 command mode and cause the POP3 session to hang.

Patch / fix

Timeline

  1. First public exploit (EDB-19207)
  2. Published

Exploit prediction

17.50% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-19207 Microsoft Outlook Express 4.27.3110/4.72.3120 - POP Denial of Service dos, 1999-05-11
  • securityfocus.com http://www.securityfocus.com/bid/252 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.